Ortho, what mud guard was that? Are you talking about the ABS plastic one that bolts to swingarm, under the front lip of the rear fender to keep crap off the rear suspension unit?
If so, may I ask why? I'm running one bobber style with no mud guard, and I wasn't anticipating that being any kind of a problem. If there's one I could head off first, I still have a cut down one I could bolt back into place.