Hello to all- getting back into the hobby, and this is a trip down memory lane! I Got a Javelin starter set for my 7 year old, and an Air Walker for my 9 year old. Amazing to see how some things have changed, and some things haven't. Engines seem about the same, but the launch systems are easier (no more lantern batteries!). We've had some great fun with B6-4 engines and the Estes Altimeter. In the early 1980s, I had the Interceptor, USS America, and Phoenix Bird. Phoenix Bird was my favorite because of the plastic fin can, the large diameter tube which made parachute packing easier, and the payload section. I'm trying to recreate the old Centuri Phoenix Bird using a Estes Eliminator kit. I want to make the upper BT-56 tube into a payload section, but to do that, I'm gonna need the plastic coupler that fits between the two BT-56 tubes. Anyone know where I can get this coupler? Thanks!!