There are about 11 setting for the traction controller. If the replacement controller is set to the same parameter values you should be ok but you mentioned you have a modified machine so it may be that adjusting some controller settings is required. Did you copy the settings in the old controller? that would be a good reference point to start from.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.