I finally got to spend an entire day cleaning, priming and painting my HF 1740 stretched (from 96" to 113") and augmented frame. The frame (thank goodness) is square but after putting on the axle and wheels, I noticed that it is cupped diagonally; that is, the front left corner and right rear corners are 3/4" higher than their respective opposite buddies on the other side. I will be adding some wood cross members to bolster the support in the middle.
I took it for a ride and except for one wheel that has a very slight shimmy everything tracked straight and true. My thought is to clamp the frame level when mounting the floor and it will hold the corners level after bolting. I have pushed both corners down at the same time and have found that there is currently enough flex for both to move into level with the rest of the frame. So, am I fooling myself or this the best way to coerce the frame to level?
Also, btw, my spray painting finger is numb from 3 cans of primer and 3 cans of Rustoleum.