Now that I have built a couple of 29mm and 38mm rockets, and have flown a few F and G single use motors, I guess it is time to enter the realm of reloads. However, to the novice, the world of reloads is confusing - what kind of casings should I get? Are all casings compatable with Aerotech motors? Do I need several length casings for each diameter hardware? Any thoughts on this would be greatly appreciated.