Well my bike has been skipping for a while, thought it was the freewheel, but its definately not that because i now have an Eno. The bottom bracket is also fine, i had a new 'un not long ago. So either the rear wheel is fudged or i've done something wrong. The freewheel seems to not spin in a straight line, it goes ape shit, it turns in sort of an S type shape, but obviously less dramatic. Any help appreciated.