Friend brought a .22 Rossi 511 over to me to try to repair. Needless to say, I know absolutely nothing about Rossi revolvers. Trigger would not reset correctly every fourth or fifth pull. Pulling the pistol apart, I found slight galling where the spur on the trigger was contacting the side plate. Honed the trigger spur, checked all parts for wear and checked spring compression and then reassembled, thinking I had the problem fixed. Same problem. Took gun apart and checked parts again. This time I noticed some galling on the hammer block as it rides in the slot in the sideplate. I honed and trued the hammer block and reinstalled; same problem. Out of frustration I left the hammer block out and put the gun back together. The thing functions perfectly. Has anyone else had this problem? Guess it's a call to gun parts to order another hammer block.