Thanks for your replies!
I am not so much concerned about the condensation, the new dash has it as well (I will have to try the low-wattage bulb trick).
I was more worried that a reset odometer could lead to registration/service interval headaches - seems like something that should be hard to do! If ...

About to bite the bullet on a low mileage '06 Multistrada 620, but something has been bugging me. Original owner had the instrument panel replaced once due to condensation, and essentially the odometer was reset in the process. Is this a normal occurrence? I have a record of the bike's actual mileage.