Quote Originally Posted by paul ron View Post
That's a grafloc back... Use an RB67 back on it?
Koni Omega did not use a Grafloc in ANY of it's iterations.

I have a "Rapid" and out of 3 backs only one spaces correctly.
I started working on one and the tiny needle bearings are indeed TINY.

I did get one side of the bearings back in and decided to not pursue it further.
Those backs will seem smooth/fine until you put a roll of film in or apply some pressure to the take up spool. This is when you can tell if it doesn't advance smoothly.

Maybe I'll try taking one apart again someday soon but...