My fazer has started to jerk at 3k revs and stutter, it sounds very much to me like the pistons aren't firing quite in order, so I'm suspecting the carbs need balancing.
Never done it before, and I don't have a set of gauges to balance them, and to top it off I was made redundant not too long ago so money is a serious issue right now. Don't suppose anyone in or around the Manchester area has a set I could use??