Hi,

did you reprogram the Steering Potentiometer to the Controllers? you have to set the Endpoints LEFT / RIGHT an d MIDDLE its located in the STEERING PARAMETERS. And of course you have to set the VEHICLE LENGHT for your LE 20-66 MP it must set to 2. Here is a little table for this PARAMETER:

0 =LE 13-44 / LE 15-44
1= LE 16-55 / LE 18-55
2= LE 16-66 / LE 18-66 / LE 20-66
3= KE 16-55 / KE 18-55 (4-Wheeler)
4= KE 18-66 / KE 20-66 (4-Wheeler)

Hope that helps you.

Mfg

Sven