You need to go through calibration modes 1-6 using a curtis handset, ie 1311-4401, 1311-3301, 1311-2201, 1311-1101 or the older version not sure the number, you will need to calibrate steering right, steering neutral, steering left, forward, neutral, and reverse I think direction is 1-3 and steering is 4-6 not sure off hand
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