I have, after months of trying, given up. The 31 tudor has whupped my butt. Not whipped, whupped, thats worse. I have, sadly, given up the stupid idea of trying to make this thing totally square, it ain't gonna happen. I have squared the roof, thanks to Kevin's measurements, and as some of you may remember I built a nice sturdy floor truss system which itself is nice and square. So building from a square, solid "floor" up to a square, solid roof should have been easy but alas that was not the case. Also note that I had opened up the door openings to flush fit the doors so this is were things don't come together. I guess since the doors overlap the quarters the idea of the openings needing to be totally square were a mute point. I can square the entire rear section of the body and roof then when trying to match cowl/doors, square openings then the doors don't fit and the gaps go to hell. If I over lapped the doors like original it wouldn't be a problem you'd never see it. Of course all of it could be over come by A: replacing each panel and fitting as you go. B: cut existing panels, fit gaps and weld back together. No I did neither I opted for option C: throw caution to the wind along with the measuring tape. Now there is over 1/4" difference on quarter heights but I do have body lines flat on the cowl, doors and quarters (hate crooked body lines) also have door gaps but boy are the measurements off! I.... MUST... NOT .... THINK.... ABOUT... THE.... MEASUREMENTS.....!! It drives me crazy, first time in my life I couldn't square a body and make it fit !!