Those little .049's were really cantankerous. I probably spent hours trying to start them. Not even the zip starters were any better. I'd say the Cox .049's with the spring starters were best, the Testors planes were much more difficult for whatever reason. I probably had them flooded out constantly, with repeated priming that always seemed to be the answer. There is no joy without a previous contrasting period of frustration though, and if those control line planes were electric and just started up with a switch what would be the fun of that? I had the orange colored Cessna Skymaster twin-boom plane, and then the much faster Cosmic Wind. It turns out the Cosmic Wind couldn't handle 25mph crosswinds, and would only perform an upwind wingover to a downwind smack. The chrome paint would come off with the 25% nitro Cox fuel too. A Ringmaster would have been a boon to me. Too bad I never built a real CL plane. I remember when someone gave me an Enya .09 R/C. Oooooo. That was way bigger and filled the basement with castor oil smoke twice as fast. The Eaglet 50 just wouldn't fly with the .09 though, not even a hand launch could get it going, it would just set down in the snow and disappear, filling the nose with snow all over again. Then I got a .25 for it and got it much higher before crashing it.