That makes great sense...never really looked at it that way, but you are 100% right.

However, I know I am getting unhealthy flutter at an extremely low speed. I added a brace to the top of the servo mounting plate, I am also going to change out the existing servo and/or arm and give it another try with a 14x4 prop...althought this is what I am using on my Saito 72 I know a 15x4 apc is too much for my 91...takes for ever to spool up.

Again thanks for the help, I am hoping I can get to fly right before I just decide to sell it.

Thanks,
Eric

If you can think of any thing else, all ideas are welcome.