My MUP8 was my first foldy and I bought it from a chain department store here. From day one the hinge was damaged and pretty sure I bought it like that. Probably got messed up on the showroom floor by some customer or employee. Brought it back in to fix and the people there literally told me they had no idea how to fix it. They got parts which took a couple weeks then told me to wait a couple more weeks while they waited on explicit instructions. Of course the parts came with a drawing. Not sure what else you need.

So I demanded the parts and "fixed" it myself. Unfortunately I could never get it right and decided the frame was bent and that I'd been screwed because by taking the parts the store told me they'd no longer recognize the warranty.

So one day I completely disassemble the bike on a bike stand and am just going to keep all the parts. I literally take EVERY SINGLE THING off the bike and then decide to break the bike in half to make it easier to throw away. As I removed the hinge stuff I looked at the cam and noticed the hole was offset and wondered if maybe I put it in upside down. I did. Put it back together and the hinge operated perfectly.

Had to build the bike back up from the nothing which however was fun and helped make me a smarter bike wrench.

All things considered I love the MUP8 as much as any of my other foldies. Had it been good from the get go I'd probably have never bought another one. Now I have 5.

John