All three of the pin holes on the rim cracked as well.

This is the filler that I used.

I forgot to get shots of sanding and opening the cracks. Basically I used 120 grit sandpaper to rough up the finish. The cracks were opened up with sandpaper, an air grinder, and a razor blade. After the first sanding I blew the dust off and cleaned it again with the quick clean.
Here’s the end of one of the arms after the first pass of filler.

The lower portion.


This is the filler that I used.

I forgot to get shots of sanding and opening the cracks. Basically I used 120 grit sandpaper to rough up the finish. The cracks were opened up with sandpaper, an air grinder, and a razor blade. After the first sanding I blew the dust off and cleaned it again with the quick clean.
Here’s the end of one of the arms after the first pass of filler.

The lower portion.
