What a great thread.
"A while back, I painted a left 521 door, and put some insulation on the inside of it, and new window run channel. Today, I put that door on Ratsun. After adjusting the door hinges, and catch, the door closes easily, witha nice sounding "thunk", and no rattles. I cannot remember where I put the door repair info. I will try to find it, and update when do."
Did you ever find this info? It would be really helpful, as I'm looking fo install a new run channel and replace felt & weather stripping.
Good work!