I think Accushift are spaced at 5.5mm and Ultra at 5mm, or was it the other way round? Anyway standard spacing is 5.3mm. I have heard tell of people that are happy running mix and match between Suntour and other stuff, but I'd rather not take the risk unless I have to. I know that if you line everything up in the middle that things would only be half a millimetre out at either end, but even so...
Thanks anyway.