Guys,
I just wanted to chime in, as I just got back from the Colorado mountains towing on my way to Moab.
I tow 12,000 trailer weighed on a CAT scale, that's with my water, firewood, RZR inside the toy hauler, everything, real world weight.
I too, found from 2nd to 3rd was way to big of a gap. I was very disjointed. I was either screaming 5,000ish rpm at 50-55 mph, or it would go to 3rd gear then loose speed.
Now, I am familiar with the "ike" on TFL, I did do that particular stretch, and if anyone is interested, I was able to hold 50 MPH, in 2nd gear, and my transmission temp got to 239F, and my engine temp did not move.
my whole experience is what brought me to this thread, I was wondering if anyone else had issues going from 2nd to 3rd, and it appears many have.