Well atleast I have a nice weight for the B-29 now! (if I ever build it lol). Filling in the seams on the booms now. New easy tactic, tape off the seam then putty it then rip the tape up and sand it a minute later. Even if the putty is not hard it still fills the seam and is very easy to sand soft. Ive tried the "dry" approach and it sucks!