I have had some stainless screws in my t4 for a very long time... I put them in the truck in 2005. I have not stripped any per say, but they are definetly looser on the tip of my hardened hex drivers than the stock ones. And they do feel heavier than my stock steel ones. But they are shiny and pretty. If your going to use stainless, use a good tool or you will just end up regretting it. In fact, I would always use hardened tip drivers if I were you.