I agree that technique/process is key. I have Rocket Rons (2.1's, EVO, non TLR) and they went right on with no issues. Using some sealant on the beads really helps along with starting witht the valve at 6'oclock (bottom). I also roll my wheels with downward pressure right after I get the tire on.
Either way I pretty much always use tire levers and sealant.
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