Sold an MS360 rebuild kit with all the plastics and consumables and pretty much everything except the crankcase and crank, guy returned it because it didn't fit an 038 even though it looked like it would fit in the picture
Sold a Stihl brake Spring tool to a Volkwagon dealer service department that uses it to pull stubborn dust caps from the wheel covers on cars
A guy bought an aftermarket top handle for a pro stihl and asked if he could return it for partial refund because even though he bent it to try to make it fit a different model saw than it was built for he thought he had gotten it bent back pretty close to where it was when he received it

he wasn't mad when I declined and left positive feedback anyway
People ask me about once every two weeks if some random part will fit some completely unrelated saw like a carburetor for an 026 to be used on an 088 or a Mac 10-10
Also people will ask if an MS260 piston will fit an MS261 even though they can see both OEM pistons and can see they look nothing alike and are drastically different prices.
Also requests for obscure carburetor kits and sage advise on which of the 6 or 8 models of aftermarket sprockets I have for Stihl models will fit their grandfather's old saw in the garage that is either green or yellow and pretty big (actual request).
Most days it just makes me laugh.
Dave