diff --git a/src/parameterizations/lateral/MOM_Zanna_Bolton.F90 b/src/parameterizations/lateral/MOM_Zanna_Bolton.F90
index 7a0bd3aa29..2fe7f280ad 100644
--- a/src/parameterizations/lateral/MOM_Zanna_Bolton.F90
+++ b/src/parameterizations/lateral/MOM_Zanna_Bolton.F90
@@ -547,13 +547,13 @@ subroutine Zanna_Bolton_2020(u, v, h, diffu, diffv, G, GV, CS, &
 
   ! Update the eddy viscosity acceleration with ZB model
   call cpu_clock_begin(CS%id_clock_upd)
-    do k=1,nz ; do j=js,je ; do I=Isq,Ieq
-      diffu(I,j,k) = diffu(I,j,k) + ZB2020u(I,j,k)
-    enddo ; enddo ; enddo
+    !do k=1,nz ; do j=js,je ; do I=Isq,Ieq
+    !  diffu(I,j,k) = diffu(I,j,k) + ZB2020u(I,j,k)
+    !enddo ; enddo ; enddo
 
-    do k=1,nz ; do J=Jsq,Jeq ; do i=is,ie
-      diffv(i,J,k) = diffv(i,J,k) + ZB2020v(i,J,k)
-    enddo ; enddo ; enddo
+    !do k=1,nz ; do J=Jsq,Jeq ; do i=is,ie
+    !  diffv(i,J,k) = diffv(i,J,k) + ZB2020v(i,J,k)
+    !enddo ; enddo ; enddo
   call cpu_clock_end(CS%id_clock_upd)
 
   call cpu_clock_begin(CS%id_clock_post)
@@ -614,13 +614,14 @@ subroutine step_forward_ZB_memory(u, v, h, G, GV, CS)
   call pass_var(CS%Tyy, G%Domain)
   call pass_var(CS%Txy, G%Domain, position=CORNER)
 
-  !if (CS%Txx_with_memory(20,20,1) == 0.) then
-  !    ! This is lazy initial condition
-  !    do k = 1,nz
-  !      CS%Txx_with_memory(:,:,k) = CS%Txx(:,:,k) * G%mask2dT(:,:)
-  !      CS%Tyy_with_memory(:,:,k) = CS%Tyy(:,:,k) * G%mask2dT(:,:)
-  !    enddo
-  !endif
+  if (CS%Txx_with_memory(20,20,1) == 0.) then
+      ! This is lazy initial condition
+      do k = 1,nz
+        CS%Txx_with_memory(:,:,k) = CS%Txx(:,:,k) * G%mask2dT(:,:)
+        CS%Tyy_with_memory(:,:,k) = CS%Tyy(:,:,k) * G%mask2dT(:,:)
+        CS%Txy_with_memory(:,:,k) = CS%Txy(:,:,k) * G%mask2dBu(:,:)
+      enddo
+  endif
     
   if (CS%ZB_memory_type == 1) then
       call tensor_advection(u, v, G, GV, CS)
@@ -631,18 +632,18 @@ subroutine step_forward_ZB_memory(u, v, h, G, GV, CS)
     ! relax Txx, Tyy to ZB: this is the Eulerian part of the averaging
     do j=js-1,je+1 ; do i=is-1,ie+1
       ! compute eddy memory time scale at cell center
-      sh_xy_h = 0.25 * ( (CS%sh_xy(I-1,J-1,k) + CS%sh_xy(I,J,k)) &
-                       + (CS%sh_xy(I-1,J,k) + CS%sh_xy(I,J-1,k)) )
-      D = sqrt(CS%sh_xx(i,j,k) * CS%sh_xx(i,j,k) + sh_xy_h * sh_xy_h)
-      tau = CS%ZB_memory_const / (D + 1.0/CS%ZB_max_memory)
-      !tau = 7776000.0 ! 90 days
-      CS%ZBtau(i,j,k) = tau
-
-      ! Eulerian memory with implicit time stepping
-      CS%Txx_with_memory(i,j,k) = tau / (tau + CS%dt) * CS%Txx_with_memory(i,J,k)     &
-                                                + CS%dt / (tau + CS%dt) * CS%Txx(i,j,k)
-      CS%Tyy_with_memory(i,j,k) = tau / (tau + CS%dt) * CS%Tyy_with_memory(i,J,k)    &
-                                                + CS%dt / (tau + CS%dt) * CS%Tyy(i,j,k)
+      !sh_xy_h = 0.25 * ( (CS%sh_xy(I-1,J-1,k) + CS%sh_xy(I,J,k)) &
+      !                 + (CS%sh_xy(I-1,J,k) + CS%sh_xy(I,J-1,k)) )
+      !D = sqrt(CS%sh_xx(i,j,k) * CS%sh_xx(i,j,k) + sh_xy_h * sh_xy_h)
+      !tau = CS%ZB_memory_const / (D + 1.0/CS%ZB_max_memory)
+      !!tau = 7776000.0 ! 90 days
+      !CS%ZBtau(i,j,k) = tau
+
+      !! Eulerian memory with implicit time stepping
+      !CS%Txx_with_memory(i,j,k) = tau / (tau + CS%dt) * CS%Txx_with_memory(i,J,k)     &
+      !                                          + CS%dt / (tau + CS%dt) * CS%Txx(i,j,k)
+      !CS%Tyy_with_memory(i,j,k) = tau / (tau + CS%dt) * CS%Tyy_with_memory(i,J,k)    &
+      !                                          + CS%dt / (tau + CS%dt) * CS%Tyy(i,j,k)
 
       CS%Txx(i,j,k) = CS%Txx_with_memory(i,j,k)
       CS%Tyy(i,j,k) = CS%Tyy_with_memory(i,j,k)
@@ -651,14 +652,14 @@ subroutine step_forward_ZB_memory(u, v, h, G, GV, CS)
  
     do J=Jsq-1,Jeq+1 ; do I=Isq-1,Ieq+1
       ! compute eddy memory time scale at cell corner
-      sh_xx_q = 0.25 * ( (CS%sh_xx(i+1,j+1,k) + CS%sh_xx(i,j,k)) &
-                 + (CS%sh_xx(i+1,j,k) + CS%sh_xx(i,j+1,k)))
-      D = sqrt(CS%sh_xy(I,J,k) * CS%sh_xy(I,J,k) + sh_xx_q * sh_xx_q)
-      tau = CS%ZB_memory_const / (D + 1.0/CS%ZB_max_memory)
-      !tau = 7776000.0 ! 90 days
-
-      CS%Txy_with_memory(I,J,k) =  tau / (tau + CS%dt) * CS%Txy_with_memory(i,J,k)   &
-                                                        + CS%dt / (tau + CS%dt) * CS%Txy(I,J,k)
+      !sh_xx_q = 0.25 * ( (CS%sh_xx(i+1,j+1,k) + CS%sh_xx(i,j,k)) &
+      !           + (CS%sh_xx(i+1,j,k) + CS%sh_xx(i,j+1,k)))
+      !D = sqrt(CS%sh_xy(I,J,k) * CS%sh_xy(I,J,k) + sh_xx_q * sh_xx_q)
+      !tau = CS%ZB_memory_const / (D + 1.0/CS%ZB_max_memory)
+      !!tau = 7776000.0 ! 90 days
+
+      !CS%Txy_with_memory(I,J,k) =  tau / (tau + CS%dt) * CS%Txy_with_memory(i,J,k)   &
+      !                                                  + CS%dt / (tau + CS%dt) * CS%Txy(I,J,k)
       
       CS%Txy(I,J,k) = CS%Txy_with_memory(I,J,k)