Hi all, I am writing a program for tolerance stackup analysis, and I wanted to know kind of problems designers face with respect to existing softwares currently. For example, I found out that using GD&T and monte carlo simulations, many ASME 14.5 rules cannot be incorporated. Also the major problems with these packages are that the results depend on the expertise of the user, not just the GD&T specifications. So what are other problems that need to be addressed. Thanks a lot!