Two things can lead to galling, lack of oil and lack of adequate clearance for the oil to go into the pistons, wrist pin bores and rod pin bores shruggy
Or maybe even bad oil shruggy
I would see about honing the pistons, rod pin ends and polishing the pins to see if they are savable scope I hope so luck
I like loose wrist pin to rod pin bushing clearances, .0010+ on .990 pins, more for bigger pins up

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)