Not sure if anyone has had this happen to them before but has your hammer screw backout to give you slower velocities? Or does it annoy you that you have to lock tight in the hammer screw to keep the screw from moving. I have only come across one gun from the factory that has a set screw to prevent this happening which was a Hatsan gun. One day a matador I use to own gave me very low POI and sure enough the hammer spring screw backed out. Good thing there was already a hole taped for a screw and all I had to do was buy a small set screw. And the hold time I was thinking why couldn't Ed add this set screw in the first place. How did I know to check this first? Because a cricket I use to own did the same thing and at the time, it drove me crazy trying to figure out what broke on the gun. And now I noticed my BSA had a lower POI change even though I have not shot this gun for a couple of weeks. It's still very accurate in a slightly lower velocity but I know that hammer spring would continue to turn so I had to lock tight it in place which annoys me. Even adjusting the wildcat is a little annoying to tune. Taking a flame to heat a PCP gun makes me nervous every time and wish all PCP guns had a set screw to keep the hammer spring from moving.
