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Let us get this fixed,paint the tang with Dykum,let dry,assemble razor.work the blade back and fourth once or twice,disasemble,you will have your answere.

Hope you get it fixed,am at a loss as to what it could be,Might consider sending it off to M.I.T.

Am a perfectionist as much as most,but is it really that much of an issue?

As you suspect,Would bet you bent the pin.