I bought a used Craftsman E150 Model # CMXGRAM1130049.......I'm having an issue with the forward speed, it only goes one speed which is too fast.....there is no gradual speed increase with the pedal. It's either full speed or nothing. I thought it might be the Speed Sensor which is attached to the pedal. I ordered a new one but it's not the same part as the old one......anyone else having this issue with either the Craftsman E150 or Troy Bilt Electric rider?