Thanks, I'm trying. For a rocket like this, though, the finish is so critical; masking is going to be a real bear, I think. I was amazed to see that Aerotech offers "F" motors in 24 x 70mm size! I'm not the altitude junkie I was when I was a kid - something about putting all that work into a rocket and never seeing it again - but I was wondering what sort of performance I'll get, especially if I have to add more nose weight for the smaller fins. Even an "E" engine could pull the CG back a good ways. I take it you always have the spacer ahead of your engine.... bet that's got some burn on it!
I'm hoping that, like yours, this is a sturdy, faithful flier.