Well to start out, the Odometer doesn't work anymore on my 90 325. But i knew that when i got the car. But because of that, my new problem is even more important. I noticed that since my last fill-up (3 days ago) my gas gauge hasn't really moved, and i've driven it all over town in those 3 days. Is there a way I can just replace the whole cluster AND get a new OD, or will I have to replace individual parts.