finally figured out my problem. the tail wag was due to the gain at 100%. forgot to set that after binding and data reset. shes flys nice. i do see some vibrations but it must be the blades are out of balance and cant withstand the power of the lingo 9.....first upgrade coming is the dx6i and radix carbons. what headspeed is safe for the plastic head? i may have too much motor for it right now. according to the headsprrd calculator i have 2930 rpm with the current setp. and thats with the 10t pinion ...if i threw on 11t my headspeed is 3250