Got a little gritty feel to my cocking on fx wildcat. Took out hammer spring and brass piece and put lithium on it.. smooth as butter for about 3 mags. And now gritty.. so took out the actual hammer this time.. put on grease lol.. too thick. Pulled trigger and had about 5 psi come out. Makes since I guess. Anyways.. what's the best thin lube that last? Moly?