[quote="Andy"]The 1991 is probably the hardest on all the components too, by the nature of the way it makes its power.[ quote]

An informative post Andy. When talking to Padgetts recently about RS250's, I was told that NF5 parts are becoming increasingly harder to get hold of, compared to NX5 / NXA.
_________________
Rich
MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30