I spent the evening shrinking the 3/8" dome out of my passenger floor pan so that it would fit proper to the cab support. Had to use a few sheet metal screws to suck in a few stuborn spots on the support near the seat belt bolt locations. I need a few more clamps along the very top lip to confirm that it will sit tight and then it can be taken off for blasting. While I wait for that I can weld up some more of my door seams and the inner roof seam. Getting that much closer to a horizontal cab!
