It is a dinky little thing, isn't it. Checking on the punch size is a good idea, and I'm using a punch that's ever so slightly smaller than the pin. FYI, the pin sticks out from the botton about 1/32 inch, so for the first 1/32 size doesn't matter. Your penetrating oil suggestion is good, of course. I was using a common commercial one, but decided to use a good one. Kroil. For $14 per 8 oz., it damn well better be good. The professional gunsmith comes next if this doesn't work.
FYI, my son was in the 173rd Airborne out of Italy. He went in to Iraq from the north when it all started. He's light, so he went down with the base plate of his crew's large morter. He was wouded by a rocket propelled grenade while his crew was sleeping in Chemical Ali's palace. It cost him both feet. He was the first 173 soldier to be wounded in war since Viet Nam.
http://www.patriotfiles.com/forum/ar...p/t-30264.html
http://articles.latimes.com/2004/jan...ts/sp-duckrep6