Yeah, I feel your pain or lack of. I spent today trying to fix my air tank (success) and filling it to run my airbrush and paint three rockets I don't really need (a bt-55 rear ejection I made up, a Wizard clone I scrapped together but retrofitted to fly mini engines, and a booster stage that I made in case I lose the booster stage for the mini 2-stager I created, since if I lose the booster stage I've been using there would only be one extra booster stage left). And I also checked out a really low-rent hobby shop in a very sketchy part of town in hopes of finding a bt80 coupler just in case I ever come up with a reason for making a rocket that needs 2 bt80's. Successful trip in that I found the coupler, but man this place was nuts! They wanted $100 for an Estes V2 kit that had probably been in the shop since the 70s. It actually might have been worth it for the collectible value.