My speedo is broken. I took it to the shop and was told that the guage itself is broken, nothing electrical or sensor related (my year is mech speedo anyway i believe). it will be cheaper to find a used one and just replace the whole cluster than have the dealer fix it. I just want to make sure it is possible to correct the odometer on the replacement peice to reflect my actual mileage instead of the mileage of the car it came out of. Is this possible without breaking it in the process?