My chain keeps slipping/when I go onto my 11 tooth rear cog. Any ideas?
Kit as follows:
Ultegra chainset 39/53 I think, Ultegra 11-23 cassette. Mavic Askium wheels, Connex 10spd chain.DA rear mech
What I've tried:
chain too long - yes it was, now correct length but still slipping/skipping (moral - don't fettle when small people are nagging you).
Stiff chain link(s) - checked and double checked. Tis a new chain, flexed it to ensure no tight links.
Cream crackered rear mech: swapped to the spare Ultegra I had, made no difference. DA rear mech now awaiting strip,clean and grease.
cable snagging - my cable adjusters have both broken, possibly causing some cable stick? To be replaced as soon as the postie delivers them.
Cassette play/wear? My cassette has some play on the freewheel. I am using the Mavic spacer but there still is a bit of play with the cogs furthest away from the lockring. Lockring is as tight as i can get it. I know this may sound strange but is it possible to fit a shimano cassette to a mavic campag freehub?
Worn cassette teeth - no bent teeth, cassette is probably nearing the end of its life
Anyway at a loss. Any thoughts appreciated. The slipping/skipping is hard to replicate when on the workstand, only when actually pedalling.
Ta in advance