OK, heres what I did.
Using plastic levers on single turn pot
Using a cut out plastic lever on single turn pot
And gears left over from the winch motor demolition
Essentially, I used what ever I had. the gears do not do a full turn, about just under 1/2 a turn. The pots are 5 turns and spin about 3.5 turns.
It would be a matter of finding some gears, and seeing how far a big gear turns a small gear so as to calculate how many turn potentiometer you would need.
Or if its easier, start with a single turn pot and use a lever something like the others.