Measure ten times and cut once.
You can see in the first photo that i relocated the crossmember.I used a quick dry epoxy and self tapping screws through the roof.
I also took your advice boywonder and put in corner braces in all four corners.
Once the hole was cut i drove convertible style across town for some free labor.We first set the lifting mechanism on.Bolted it on and then set the top and canvas on.The canvas is temporarily screwed down to the roof.Im waiting on the new bulb seals to arrive.
While top was still on the trailer i removed all the butyl and the urethane seals.The best way i found to remove the butyl was to use more butyl that had been balled up and just roll it over top with a pretty good amount of pressure.The butyl was only used on the front and rear everything else was urethane (windshield sealant)or at least thats what it was identified as by two local body repair shops.This is what i will be using to reattach the canvas to the roof.If you look really close you'll notice the top is still silver the body shop said they would rather paint it on the the roof.(I think he was really worried about me scratching while installing though).
I have a few small holes in the canvas that i will have to repair soon.Right now I'm leaning towards cementing patches and also sewing with a speedy stitcher.I looked for threads on this but found none any advice is greatly appreciated.