Hi Clive,
I am absolutely not an expert on electronics. In fact I have no knowledge at all on that really.
But I am pretty sure its not a matter of matching exactly amount of Volt like you say, as only the differences between start and stop are measured.
But I could be wrong on that and these G25 circuitboard indeed only works in that Volt areas you mentioned.
However here some thoughts/idears:
Looks like your new potentiometers do match 10k +-10% ,like the original G25 pedals pots have.
But if the originlas are linear or non-linear ( no idear what that really is ) could be important to know. To be on save side the new pots may should match these parameter as well.
Antoher thing important to know, is the working range of the potentiometers. Some do have a dead zone on their travel range. Mostly those who come without an mechanical start and stop.
However , to check that I did used the tiny programm called DIView.
It makes the movement of pots visible and allows calibration/configuration.
http://www.leobodnar.com/shop/index.php?main_page=page&id=12Dunno if that helps you, as your pedals run via G25 circuitboard, if I understood right.
At least your wheels axis movement should be displayed.
If your pedals arent recognized by diwiew then , even if you did move the pots axis by hand , to got free from the limitted travel way given by the gearing of the G25 pedal construction, I am clueless.
But if, then you are able to figure out the right position of how each axis has to been mounted to the gearing of the pedals. ( working range of potentiometers ).
I never did run pedals via G25 circuitboard. ( never did have an G25 wheel ).
I always used LeoBodnar USB chip stuff to run my wheels and pedals.
Actually I run G25 pedals wired to that kinda chip.
It could be that these Bodnar chip is more forgiven than G25 circuitboard, if pots are on that dont match exactly the originals in all therms. I dont know....
So in case your new pots could not go to work via G25 wheel, for sure its an good alternative to run for an LeoBodnar BUO836 12bit joystick controller.
Good luck and do not hesitate to ask more.
Btw. If I am lucky, today my new Clubsport V3 pedals do arrive. Wonder if I can get used to that hall sensor magnetic stuff so....
kindly regards
Nicky