I will check the things you suggested. Also, an FSM is on the way. I am new to GreenTractorTalk (just found it yesterday) and have already found it to be a very helpful and interesting website, lots of great stuff!The most common problems are:
-The pedals are out of calibration
-The wiring to the pedals is loose
-The MFWD sensor is bad
Do you have the FSM (factory service manual)?