Also if you need the part number for the replacement bezel you can sometimes find them. I had to buy mine from Switzerland. Part numbers Manufacturer Part Number(s): GH98-40541A; GH96-10729A

If you can find the replacement wheel. All you have to do is take a very small Jewelers common head, and carefully twist it the wheel will pop off but make sure that you do it in a plastic container upside down. There are four micro ball bearings that will pop out. All you have to do after you take the metal wheel off is take the plastic ring it will look as though it was broken but it is not insert into the bottom of the new wheel put all four ball bearings back in and pop it back on that is all there is to it.