Thanks guys for all the good advise. These servos are going in the 60-90 Fiesta by Mecca Models I won at the 2nd I-Net fly in, which was the best fly in I have ever attended, the 1st was a blast also, and next year will be even bigger & better. I ordered JR 4131 servos with 90.4 in/oz at 4.9 and a 91FX for power. I hope this will be a good combination for this bird.