Will get some pics later, but I thought I'd just say, coke can* shims FTW.
way way too big, a good few mm's i reckon. a double wrap of can, then folded over in half. so around a total of four complete revolutions. works like a charm
*other soft drink or alcoholic beverage** metal containers can be used in the production of this shim
** this would've been more appropriate
Good to hear. I have a similar arrangement on my roadie. I'm using a USE plastic shim to go from the frame's (allegedly) 27,2mm to the seatpost's 25mm, but it was slipping, so a single layer of Coke can sorted it perfectly.