I tore into my 15-91 yesterday, lubed and oiled it. I even took out the screws for the grease and replaced all the grease. I really need to take kerosene to her innards one of these days and get her really cleaned out. This has been fun, I hope these machines find happy homes. If a price isn't what you'd like, I'd say wait a week and then call to see if the machine is still sitting there. Negotiate! I once bought a BabyLock sewing/embroidery machine for half the price the dealer was asking simply because she wanted to get rid of me! LOL! She actually told me this! Too funny!