Well, it is possible the screw holes are not deep enough for the supplied screws, or that the screws are a little too long. Any manufacturer can have slips that get through QC, not just TC. But it is an easy fix as it is not hard at all to simply grind a little off the screws. A 6 year old could do it. Something that should be checked on any firearm you are mounting sights or scopes on. Would much rather do that than take a chance of driving too long screws in so far that they bulge the bore.
As for TC's customer service, it has always been one of the best from any firearms company in this country or any other. While its true that Tim retired and he was a huge loss to them, S&W took over and maybe some policy changes have occured under S&W rule, it is also true that your suspected problem was probably not the only one they had to get to. Their customer service takes an active roll in the manufacturing process, including running quality control of that process. They are also involved in R&D. Spread too thin maybe, but custom service to customers is not their only concern. Besides, try contacting any other firearms MFG for the same and see if you get a reply at all.
