It's a pleasure to be on board. I went through shell "bingo" with the guns I previously mentioned. Factory Remington, Fiocchi, Nobel and Clever shells all exhibited sporadic FTF in the guns. Reloaded Remington STS and Gc's as well as Winchester AA's, all using Winchester 209 primers did the same thing. I'd finally had enough and replaced the hammer springs. I polished the hammer struts, installed the new springs and haven't looked back. I feel your pain. Sometimes is just easier to rip the band aid off and get on with life. Good luck.