No, haven't used the T-9 stuff at all so can't offer any observations.

Phil, another good resource for hardware "stuff", not gun stuff in particular but often a source for odd parts, springs, screws, shims, tubing, anything that might be in a major hardware store is McMaster.com . Their site is a little wormy as far as finding things but you'll get the hang of it. My orders have been shipped at actual cost andfor less than I would have expected.