revo will not move forward or backwards
New to this site so bear with me please. Have a Revo 1/16 brushless, about 4 years old. Got it out of storage after about a year of no use, changed the control batteries and charged the car batteries. Went through the steps outlined in the manual to re-calibrate or reset the speed control, the steering works both left and right although it chatters a bit when off the ground but the car won't go forward or backwards. Tried the process with different settings on the control 50/50 etc. Still no luck. The light is red so the low voltage control is off I believe. Anyone have any ideas?