Real scanned meshes are having trouble with preserving sharp features

[sumukund]

Hi,
when I'm using a real scanned mesh, it's becoming very over smoothed. All sharp lines and features are getting removed.
I tried setting the noise level to 0.1 and the step to 5.
I also tried setting number of iterations to 10.
What is the best suggested weights (k1, k2... k5) and bnfloop for a real mesh object, not a synthetic mesh? since these are real they dont have a ground truth.
Thank you