Like to hear more bout that source Fred. I think I could only
find the two sizes that were used on my '50, 3600.
Don't remember what the pin diameters were but there are HD
external retaining rings available with thicknesses of .050 to
.062". Don't see why the wouldn't work just as well if not
better than the half arsed clips that the factory used.
http://www.prospectfastener.com/store/retaining-ring/external/
dg


Denny G
Sandwich, IL