I tried to reset the tire inside the wheel myself. That did not go well. Lol. Maybe lots of soap and water and it will work easier.
I did my singles 95% myself. Had a machine break down the inner bead. That's it.
A light mist of even just water helps to get the new tire over the lip and onto the wheel.
If you have MT ET R's - f&@k the guy that cast that rubber mold for those tires. They're a hair smaller than anyone else around the opening.
What worked for me to seat the tire on the beadlock side was taking some BIG washers and about 5 or 6 ring bolts. Start at 6 o'clock and work around both directions. Get about 5-6" set another washer to hold that part of the bead. Once i got to 3 & 9 I started to have to CAFEFULLY use both elbows, my extra hand and a screwdriver with every last ounce of my sanity to pry/set the tire on the lip. The washers will hold it in place. Once it's set you can remove all washers and check if it's flush. If so...enjoy torqing 24 bolts in 3-4 steps til 12-15 ft/lb.
The inside bead set itself during inflation to 40psi. Let em both set for an hr or so. Check for pressure/leaks (I had none) and deflate to race pressure and send it.