Put together a 10/22 last year. Volquartsen THM barrel, Kidd receiver and trigger, tactical solution stock, with a Nikon P-22 scope. Gun shot great. 10 rounds in the same hole @ 25 yards. Put it into the safe for the winter. Took it out in the spring and the thing is shooting all over the place. Shooting 5" groups @ 25 yards. Took it all apart. cleaned , tightened it up, and it got a little better. Then all of a sudden, boom, 5 shots same hole. Figure whatever was off is back. Took it out tonight and back to 4" groups. Tried changing the scope - nothing. I'm out of ideas. Any suggestions would be appreciated.