Just got a minicyclone zdp -unfortunatly the thumbstuds on this design don't work for me. Does anyone know what is involved/process to non-destructivly remove them? Some other questions: Any idea if there is a dull gray or black clip to replace the bright and shiny one that comes on the knife? Is there a single sided thumbstud that would be a screw in replacement? Diameter of hole in the blade for the thumbstud is?