Looks to me as though you have an aftermarket mainspring, possibly not arched the same as factory. First, try the primer cup under the strain screw, and make sure you tighten the screw fully. If that doesn't solve your problem, replace the mainspring and strain screw with factory items. NOTE: If all this fails, you can CAREFULLY grind a SMALL chamfer onto the rebound slide where the contact occurs. Please do keep us posted.
Larry
Last edited by lebomm; 01-17-2016 at 09:21 PM.
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