JCB Rack and Pinion Slew

I was wondering if one of our JCB experts could tell me if the JCB Rack and Pinion slew system has any adjustment for wear or backlash by shimming or otherwise. I have a late model 1CX (208S) but the slew system is similar to the earlier 3CX machines. I have the full workshop manual and owners manual but there is no description of this other than replacing the hydraulic seals on the pistons. This machine has just less than 1100 hours so is generally tight but there is a fair bit of play...

JCB Rack and Pinion Slew

JCB Rack and Pinion Slew