Just posting an update. I was never able to ride the sled last season (20-21). I didn't touch it at all until about a month ago.
Retorqued everything on the front end since it was ridden after the assembly of the redone shocks and trailing arms. Redid alignment, the right trailing arm camber was way out (I see in post #53 I said I had to adjust the radius rod out, must have settled or something as I had to adjust it in a few turns to get back to zero). I also realized when I installed the new shocks the fill port for the nitrogen was facing down, just rotated it around so they are facing up.
Was able to go for a short ride this past weekend, about 35-40 miles. I was using the same 2 year old gas just trying to burn it out. I went from the marker bar just under the half mark to running on low fuel light. I was riding a bit hard the first 3/4 until I realized how fast the gas was being used. It ran good, didn't seem too rich at all. Might be bad old gas, but a carb rebuild kit might not be a bad idea? Part of me wanted to ride it with new gas and see how the mileage is.
I also still have all the aluminum rebuilt shocks, new bushings, 4th wheel kit, rear wheels to rebuild the skid I've had for years now. I swear this off-season it'll finally happen!