Looks like the previous owner(s) forgot to check something. I'm in the hunt to rebuild both front swivels. The right side blew apart on me when I was getting out of the river that I slid into. That was fun. I have new 3 degree radius arms to slap on in there with new HD turret rings also. Will post in other sections with my mods. Looks like I have some work to do!

 

That happened to my D1 a few years ago. Looking forward to seeing the results when you are done.