Well done Andy, glad you got there, It seems a black art to get the red modules to all work correctly, my own conclusion is the plugs not being cleanly seated in the receiver.
You elevation problem is with the drive motor twisting in the clamp bracket which puts the long screw out of alinement. Make sure its set true then extra tighten with the motor bracket positioned at the motor end frame .
sorry about the delay in responding, my furlough cancelled now back on the tread mill. So its back to being a weekend warrior, lol
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