What condition are the cab to frame mounts, and is the frame level with the floor? I use jackscrew-type stands for a travel trailer to assure the frame isn't twisted, plus a 4 foot carpenter's level to be sure I'm not building in a twist before trying to do major sheet metal replacement. Chain anchors in the shop floor and jack screws are a definite advantage when doing any kind of frame or structural work.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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