Scott,
It is surprisingly easy once you get the proper bracing going under the drum. I did infact use the previous repair's bracing as help, but really it was not needed that much. The pieces want to fit together correctly. When they are glued and strapped in, they are in round. I just pieced the drum together leaving one final seam in the middle to do last then I strapped it together and made sure the bearing edges were lined up correctly.
The kit sounds amazing. Best of luck on your project, and thanks for all the kind words!
Adam