I forgot to mention the BUD is a USS (United States Satellite, Thief River Falls, Mn.)steel dish, designed for the northern cllimes nasty weather. Very HD. The dish mounting ring is 1/4 inch by ~3 and about 30 inch(a guess at this time) dia. All ribs. mesh, everything, HD steel. The mesh is welded onto the ribs. I have stood, albeit, back when I was a bit lighter, in the dish to tweak the skew, without affecting it. No, there has been no effect on the C band performance. It does shade a small portion of the BUD, But this area is quite small in proportion.
For those that may want/need to do it on an aluminum dish. My thoughts were guy wire(s) from the lip where the Ku is mounted, to the center or mount ring of the BUD. Well it's only a 30 inch. and performs as. well, as a 30 inch should. The only thing I know I don't get is Montana PBS and some feeds on AMC 15, all else (est. 95+%) is good. A new metal 39 inch would probably be lighter than the commercial 30in Channel Master. But I don't have one, Think that would work even better. Tracks the arc as best as can be expected. Get the C tracking, the Ku is locked in. If it had Ku mesh, I would have kept the ADL feed and LNB's. BTW, you'd need a Prime Focus Ku LNBF.
Mounting a Ku feed to the left or right would only require another sat position be programmed a bit E or W of the C band position, for the same sat..
The Problem I had, using an ADL C/Ku feed, with a good Ku lnb, was poor Ku performance. It worked, but knew it should/could be better. I had the 30 inch (fixed) and the BUD aimed at the same sat and the 30 inch easily would get twice the transponders. My problem is the mesh used. Expanded sheet metal. It's not smooth and the holes are too big. Expanded, if rolled smooth, with small enough holes would probably work a whole lot better.