I agree with some of the previous posts. I can hardly stand Tower Hobbies, charging a premium for every little thing, especially shipping... I've never built a Sig kit, (had a used Smith Miniplane once, but never flew it) but I know the pain of seeing old familiar products go down the drain. I have a Goldberg Mirage 550 that I'd like to find some new parts for, but it's almost impossible. Such a sweet little plane, but it's out of production...