i,m new to bigger electrics. been flying gas 40% for yrs tho.anyway i have a castle pheonix 100 and a motrofly 4325-380 turning a 20x10 prop. pleanty of power but heres the problem. the throttle is not linear, not even close as far as i can tell.it seams all the power is in the top 1/2 of the stick. i didn,t measure thrust or rpm but current at full is 94 amps and at 1/2 stick it's just 15 amps. ideas? am i missing something in the set-up or do i just use a curve in the transmitter as i do in gas.

Did you calibrate your throttle end points? Sounds to me like you did not.

yes, twice

Did you end up with symtrical or nearly so end points? I had to do something with the throttle trim on my 11x to get the end points so they were close to the same as each other.

yes, and low is off and high is full on. but the responce is not linear. i would think mid stick should be close to 1/2 max rpm. it is not.my high end numbers are where they should be far as amp draw and thrust