I think I'll follow that last bit of advice and disable the auto safety (don't like it anyhow)and try to SLIGHTLY increase the spring tension on the safety button. As others have suggested and I thought initially, I could be inadvertantly moving the safety with my hand or thumb during recoil, but its not like I am not used to shooting sxs's and it doesn't happen with any other gun I have and didn't with this one till I messed with the length of pull. I think maybe something got jarred loose in process of shortening the stock. Maybe a look inside will answer the question, but I think the answer is going to be mechanical...Geo