The red is common to the A-5, virtually the same as far as we care, and in use by the swiss. Do you have the same kit as me? There is no way a Jett .90 would go in the front of mine[sm=tired.gif]! You will be fine with the .46 or a .50. Keep in mind my issues with the cowel and CG. I used a 1600 Mah battery and still had to put a brick of lead in the tailcone to get her balanced![:@] Anyway the ground testing went pretty well this afternoon, I got thru it without killing any naeigborhood pets or destroying mailboxes this time.[>:][X(] Weather permitting and I can find a 9X8 prop and correct spinner adapter I should puncture big blue next weekend.