I've noticed recently that my bike has been what i can only describe as 'jittery' between 2000-2500rpm.
Once i go over 2500rpm it's fine, picks up well, with no other issues or flat spots.
The more i think about it, it's probably been doing it for a while but as it's been gradual i've not taken too much notice of it, but now it's quite obvious.
It feels almost like i'm in the wrong gear, but i've tried different things and it's still there between those rev. ranges.
Any ideas? I'm sure it's not a difficult one if it rings a bell to anyone, but it's not something i've personally encountered before?