Hello Stuart, I and Peter Dann have also been looking at lift-keel related problems. Sadly, not yours exactly.
Mr Datatek is alive and well and living in France. He can be contacted at:
à : Keith HOWLETT <datatek@wanadoo.fr>
He's guided me towards the correct potentiometer - 351-660 from Farnell. £21.68 + VAT - or equivalent; I bought from RS components
Bourns 1kΩ Rotary Potentiometer 10-Turns 1-Gang Panel Mount, 3540S-1-102L
Stock no.:522-2968
Qty:1
and hope it's the right one, as I can't free it from the pulley wheels. I'll let people know when that's done.
And finally, Keith is offering "I have 20 brand new bare PCB's for the head unit if you are interested."
By which time we should be able to offer a full 325/335 lift-keel maintenance manual. Apart from the up-down buttons.
Incidentally, since the PCBs are the only non-OEM item as far as I know, are there any other 325/335 owners, willing to sign up for the job let?
Best Regards,
John Clack