[SEE]

I cannot see how you can modify an X52 to use Hall sensors for the Throttle Rotaries as direct replacement. The pots are in a very confined area and rely on a gear driven shaft. Has this conversion actually been done succesfully on an X52 and if so are there any pics or threads on how it was carried out?

The pots themselves can be removed and dismantled to expose the carbon track and cleaned with soft tissue using a solvent based switch cleaner. Stripping these sticks often results in wires coming away from the PCB's during removal and dismantling so make notes of the colour codes and connection points if you are contemplating any sort of repair/replacement.

I bought an X52 with faulty MFD (works fine otherwise) as a source of spares for my good one from Ebay, (one went the other night relatively cheap). They do come up from time to time.