FZS600 - No power, won't go faster than 50, engine not smooth

[BluprintZ]

Well, i might as well throw my tuppence into the ring.
My bike had a similar problem when it was at the dyno man's, turned out that the charging system was conflicting with the ignition system, replaced the reg/rec unit and all was well, although the problem did cause one of the cells on the battery to bulge slightly.

G ; )