I've got a H&R pistol that doesn't fire every time the trigger is pulled. It's one of those that you have to pull the center pin and take the cylinder out to load and unload. 622? Is there anyone who does work on these things? The cylinder doesn't turn with the operation of the hammer like it should either. I bought it from a local pawn shop and thought the main spring was bad, it was, and I replaced the captured main spring assembly but the gun still doesn't fire every time nor does the cylinder turn as it should for lockup. Are there any parts supplies around for these things? The finish on this gun looks good but, the lock work isn't up to par.