ok,. so heres what i did over the past hrs on it. now i know it doesnt look like much but when you are working with sheetmetal you dont want to rush anything. i know i jump around a lot. i have a really bad case of ADHD so my way of working with it is i get one section done then jump to something else. so i can keep my focus straight on the task at hand. first i started with the sheetmetal on the roof skin. i am working from the front to back. tacked it every 3" then worked front to back welding it in 1/2" incriments. welding, grinding both sides then hammering after each 1/2" weld. then the same thing on the other side.