I picked up this early model 1904 to refinish for my son when I discovered that the head space was too long for the striker to detonate the .22 rim. The most straight forward approach I can think of is to add material some how to the "receiver" behind the lug of the bolt handle, but I'm unsure of the best way to do that. I have a welder, but am unsure about metal finish and temper once I add metal and file it down. Have considered soldering a piece of shim stock, but would that peel away from friction with the bolt handle? I appreciate any help. Thanks