Has anyone done any repairing or maintainance on a DFP?.

Mine is getting on for 18 months old now, and I reckon the added strain of the Momo wheel and Frex kit has accelerated the wear.

I am getting squeeks, grawnches, and nasty noises coming from the FFB mechanism (I think), sounds like it isn't going to last much longer, is there anything that can be done to prolong it's life, or is it destined for the big sim desk in the sky...........