When the blade starts to play...

You could use padded vise to squeeze the bolsters together. this will only work for side to side play though. And be VERY careful not to put too much pressure o the boslters because if you do you ruin the knife.
 
I wrapped the bolsters on an Old Timer with a kitchen towel and smacked it (lightly) with a hammer and that seemed to help.
 
I have lately tightened the pivot on a Queen gunstock and a Case peanut cv. I was successful in both cases but the peanut turned out best. I placed the bolster of the knife on a knot of wood on the back porch (knots are harder) and gave a firm tap with a hammer (just one). The pin now protrudes a bit on one side of both knives no big deal, they are both users and the protruding pins are not really noticable unless you are looking for them.
On the other hand I have sent two knives back to Case to have play in the blade fixed and they have done a brilliant job with a quick turnaround.
I neglected to place a piece of cloth over the bolster of the Queen and the impact of the hammer left some aesthetic damage but I'mm gonna call this 'character'.:rolleyes:
 
Peen the protruding pins, or the blade will loosen quickly.
 
Small hammer. A tack hammer is really too big, but will work. I use the flat face.
Use short light taps, using your wrist only.
 
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