Finally installing this rack today, after it's been sitting in my garage since last November. Kudos again to
@mceagle555 for the quick sale and shipping, and the amazing job he did on the packing.
Based on
@TLC2013 post above, I went ahead and ordered the adjustable feet kit from Sherpa, it arrived yesterday. I washed the truck yesterday, preparing to do a full polish and wax on the roof before it gets covered. I'm amazed at how much dirt and crud there is trapped under those rubber strips and the old feet, ugh. I have the OEM rack off now, had no trouble with the bolts and threaded inserts, you just have to go slow, alternate turning each bolt out ~1/8 turn at a time (use a wrench, NOT an impact driver). Eventually they will get beyond that blue thread sealant and spin right out freely.
So... I discovered that there are another set of threaded holes in the roof hiding under the rubber filler strips, presumably for the LX rack, which is shorter. Spacing of the holes from rear to front is (approx.) 0", 26", 52" (unused holes), and 66". It would seem that it would be a better support system if I used the 52" holes, skipped the 66" holes, then put the adjustable feet at the very front. This would make them evenly spaced at 26" apart. I think it would look better too.
Anybody done this?
UPDATE: Doesn't work.
When I installed the front bar in the LX forward location, the 3 bars are not in alignment, the front bar is about 1/2" too high. Can't install the side plates. I'm assuming there are different front brackets for the LX? Will probably call them on Monday.