I have bought more than my share of malfunctioning guns off the net. Everything from several Kel-Tecs to a an Armscor 1911 to Dan Wesson CBOB.
I am continually amazed at how many people will sacrifice their integrity for a few bucks. Or maybe they never had any to start with. Sure pisses me off.
In each case I have fixed (or at least improved function dramatically) and then sold the gun with full disclosure.
Okay, in one case (a Rossi revolver, 20+ years ago) I took a sledge hammer to it and then tossed it in a lake. That was very therapeutic.
And I'm still struggling with the DW. It's too pretty to give up on and too pricey to throw in a lake.