So I live in the city and my Maxx kinda jitters when I hit the gas, I have eliminated the engine being the problem. After some more poking around I found that even after trying three different servos, They all jitter when plugd' into the CH2 on my receiver and its only when IO have the transmitter in my hand. I also have tryed to use a fail safe with it but it wont un-engage, I assume its because of interference. I think its the radio system( kinda old) I just need to know how much it's gonna cost me to fix it

P.s This is my first post so im srry 4 any n00bish stuff I just said