More good input, people! I think since I'm going to be pointed so close to due south (about 86 for me here) I will try it with the lnbfs at zero, and see what happens before I try building a skew-plate onto the 84E. I don't think one of these flimsy Dish Pro dishes' mounts would hold that heavy dish in place. But I have other alternatives for that, in case I decide the dish needs skewing. I know with that shape dish, its better to skew the whole thing instead of the lnbs , if you get very far way from true south/zero skew.
RT-cat, seems like it stayed 94-96degrees for 3 months around here this summer-so I put off doing much of anything outside, the gulf humidity will drop you if you work very hard in it!