I can't believe you guys are still dabling with them little power plants on your UCD. Last week I changed my YS120NC out for a YS120SC, probably the strongest YS120 ever made, and Sunday at the field the UCD finally came alive. I have som 15-20 oz in the tail, including my battery, and it finally started flying somewhat tail happy. I bring it up, out of sight ha ha, throttle back, and it does a power of inverted flat spin ever so slowly. It does have a balistic vertical with this SC though, but man, all this power is FUN.
DKjens