Thanks, Vintage. I'll let you know if I need your motor. I've got a line on one right now, but if it doesn't work out, I'll give you a shout.
Mine had just shy of 4000 miles on it, it snapped the main pin (!) between the center & pto crank throws. I can't figure it out. The only thing I can think of is, when I took it apart, I noticed all the rubber tips on the Delta reeds were gone. Maybe a hunk got sucked in just right and wedged in there?

Doesn't seem likely, tho. Bearings all seem fine (except for the one that was on the broken pin), so I dont think it was an oil problem.
Sodbuster