I have a airforce condor .25 it never has been what I would call accurate around a 4 inch group 50 yds. (My Rws springer puts out better groups) anyway the accuracy has been getting worse I bought the ring lock kit with different size holes I’ve tried all of them… I’ve checked all screws o rings took out the moderator nothing seems to help. I’ve cleaned the barrel multiple times thinking something is stuck in it?? It’s lucky to shoot a six inch group at 30 yds now Does anyone work on or tune these guns