Keep your TKC80s.
Notice the TAB which supports the fender, wiped the fender clean of mud? The inner fender can screwed to that tab or zip-tied to the frame rail to keep the inner fender away from the tire.
pdwestman, thanks for pointing that out!
It is a hard push to move the inner fender to the left, but I could trim the inner fender where it touches the airbox as seen below the clean spot in pic 606, and thereby gain about 5 mm or so clearance. That would give me a minimal clearance that could work.
However, I will change out the tires for two reasons. First, I like having a bit more clearance all around the tire to clear detritus that gets kicked up by the rear wheel. I didn't realize the TKC would be so much wider than the stocker in the same size. Second, and this is the principal reason, I want the 4 ply sidewall of the Shinko. Frankly, I didn't check the ply rating of the TKC and was shocked to discover that it is a 2 ply sidewall. My bad, for sure.
I am working to clear some handling issues on the bike
and the two ply sidewalls are very flexible and not helping my handling issues. Plus, I like having stronger sidewalls, and thus being able to run less pressures than with weaker sidewalls for an equivalent support level.
If I didn't have the handling issues going on, I would suck up the "less room", cut the inner fender, move it over and secure it, keep the TKCs and ride the mother! However, with the handling issues, I can't take advantage of the knobbies anyway. Perhaps I will keep them and install them when I get the bike squared away.
Thanks for the input!