I'm so sorry to hear about the horror story of your machine. I always take my machine to a reputable dealer, well established in my area. They always go thru the machine and if they find anything other then the normal tune-up,they call me with an estimate. If parts are replaced the defunct parts are always returned when I pick up my machine. Then they show me where the new parts were placed and explain anything else I need. Next to your purchase, the relationship with your dealer starts when you come in for free lessons or servicing. I would never take my machine to someone who passes thru town once a week or who works out of his home and advertises the he "works" on all models. How good can they really be. Established dealers in your area will only be there if they have good customer loyalty. It should be a resiprecal (know I"m spelling that wrong) relationship between dealer and customer.