Sorry if I was unclear. I'm trying to replace (take out) the bolt and nut and put in a pin and peen it.. You used a bolt and nut, and now you want to flatten/pin it into place?
I have already separated everything. ( I know all about nicking the scales while filing)
The issue I'm having is I can't get the pin tight enough to keep the scales from separating a little from the wedge at the tip.
Keep peening. They have to be very tight to close the gap at the front.
This may sound stupid. is there a point in which the pin will stop mushrooming? It seems that it has stopped tightening. Is it possible that the pin was slightly too long?