Hi Jim, hopefully I can get some pictures later today of the Shifting mechanism
Here are some pictures of my roof raise last week.
The process went like this: First I marked the uprights and torched holes(mistake) in them (above and below the cut line) Then, after attaching the jacks, I applied pressure and cut each upright, moving inward. After all the uprights were cut, I pushed up the roof, using an impact wrench on the jacks until the roof was 2 feet above the original position, allowing ample room to place the inserts in. (The total height of the roof raise was 12 1/4 in., resulting in a window height of 41 inches.) Then I proceeded to pound the inserts in.(all the torch slag caused some problems, which involved winching the roof down with come-alongs) After I finally got the roof down, (A 3 hour process) I then welded the inserts in.(Of course!

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