Ebay -love it ,hate it

Now let me give you the other side of the story from a sellers point. I've been a member and selling on Ebay since 1999. I have worked very hard to maintain my 100% positive feedback rating because in the end a good rating will usually be the difference between someone buying an item or not. I have refunded money for third members LOST by Fedex, and had to wait 6 months to get my money out of them. I have refunded money on aset of gears damaged by USPS. I have paid 600.00 to have a set of alluninum heads repaired from being droped by UPS and damaging them. Now this morning when I was checking my feedback, low a behold I have a negative feedback. This from a set of gears I sold Feb 23 2007! Guy said in his feedback that "gear was suppose to be a 5.13 but were 4.56" HE NEVER ATEMPTED TO CONTACT ME,I would have gladly refunded his money with shipping. I wrote him and asked why didn't he contact me, over the last 90 days. His reply was ,he didn't use the gears for a while and when he did he discovered they were 4.56 and figured there was no way I was going to refund his money, So he decided to leave a negative feedback! Now there goes my 100% feedback for a stupid reason like this. There is IDIOTS on both sides of ebay buyers and sellers.