Norbsa,
In your opinion, where is the weak link in the Commando piston rod assembly? You mentioned that at high revs the wrist pin pulls through the piston, have you seen failures in the rod? And if so, where?
I recently had one of my 850 Commando crankshafts balanced. And in order to balance the rod assembly, the shop removed some material from the ribs on the rod cap. As you know, these ribs provide strength to the cap and removing material will weaken it somewhat.
But if the weak link is the piston, I may be OK with wimpy rod caps.
Thanks,
Jason