Hello again.  They were tight coming out of the old piston and tight going back into the new pistons.  I heated the pistons in a oven to 450 and froze the pins overnight in the freezer.  I gently tapped the pins to encourage the insemination with not luck.  I don’t want to deform the piston by applying too much force.   I was hoping the pins would drop in easy.  No luck there.   I then tried a butane torch no the piston – no good.

There must be a trick to this.   Thanks for any help.

Swamped in Florida