The torsion bar crank can be a pain. I've changed the height on my VX several times and decided that I was over crawling under the frame with a big breaker bar. I bought a 27mm socket and now use my impact wrench to crank the torsion bars. It's a piece O' cake, you just need to mark the bolt so you can count rotations.
Your VX looks ready for those Trail Grapplers!