I'm in the process of restoring what I thought was an original Estes Astron Avenger, but after a little digging I'm starting to wonder. The question is what should the length of the main BT-55 body tube be and what is the true overall length (with the booster) ? The original kit comes with a BT-55 tube that is 18" long, but if I add up the various components to get an overall length, it comes out to 33.75 inches: 2.75 (Booster) + 18 (Main BT-55 Body) + 1 (Exposed part of transition section) + 7.75 (BT-50 Payload Section) + 4.25 (PNC-50Y Nose cone). The Rocksim file I downloaded and the actual rocket I have has a 16 in. BT-55 Tube, which is closer to the advertised overall length of 32" in the old catalogs I have. Are you supposed to cut the 18" tube down to 16" ? I couldn't find anything in the instructions that says to do so. I'm sure I'm missing something basic...
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