Grasstrack3

Cheers I'll give that a go

It's only problem when filtering in slow traffic and slow pull offs. The rest of time the bike flys

just wondering if anyone can shed any light on my issue. I've just bought this bike as a project i has a flat spot at about 1500 to about 2000rpm. i believe its been bored out to 810cc has a lazer can and K@N filter. i know for a fact that this bike has been dynojet at some point by the previous owner. From reading the printout i have. The 1st run there was hickup in the power curve up to 4000rpm for the 2nd run :- 120 mains, needle grv 4(no Spacer) idle 3.5 turns out. this had seem to fixed the power delivery to 400rpm. but its still ropey to 2000rpm