Re: I keep breaking things!!!
I probably would have gotten one of those mounts, too, had I known where to get them when I was building. This was last year about this time, maybe nobody even was selling them yet.
Anyway, I had to make one myself.
I made it out of a 1/4" hunk of welding steel from Farm and Fleet. It came as a 4" x 12" piece; I cut it down to 4" x 4", then drilled the appropriate holes for the engine side and the muffler clamp. I shimmed between the engine and the plate with that frame-drill-mount plate and some washers. It hasn't given me a bit of trouble in 400+ miles.
Tools I used:
Weak electric drill with a mandrel and a couple of cutting wheels
Broken drill bit