I have play in the steering of the OE Whitlock Mamba system otherwise it works well. I have searched for a parts and service manual to no avail. I can find one for their Cobra model, but not the Mamba. The Cobra system has adjustment through the removal of shims, but I am unsure if the Mamba is built the same. Lewmar seems to be useless unless you are buying their new stuff. All the references I find so far are for the A/P drive unit and I am needing the pedestal and gear units.