I can feel for you, but put yourself in the dealers shoes. A person with no history with them comes in looking for special support becasue an independant mechanic says that the valve guides are worn!? On top of that you bought the car used! Usually when the OEM gives special support, it is to a known customer (ie- buys new cars from them and has their mtc done there). I know it is tough, but that's the way it works. As MBDoc says, doesn't hurt to try, but my suggestion is done burn any bridges if they say no, because you might need their help in the future. BTW, I used to live in Burlington and miss it!