I assume this is an FZS1000? have you done a forum search yet? and have you checked all the basics -
- Did the local shop that did the balancing not spot anything or make any comments..?
- check the vacuum caps on the inlets aren't loose/split?
- checked HT & LV leads & connectors - a loose/worn lead/connector will cause loss of power.
- fuel pump connection - I had an issue with my FP a few bikes ago, I think it was a loose electrical connector (check the forum)
- blocked breather/fuel pipes on petrol tank.
- check the fuel filters next to the pump and inside the petrol tank.
- check for loose wires/connectors from the ignition switch.
- check the r/h engine cutout switch isnt faulty by doing a bypass.
- check the side-stand engine cutout switch isnt faulty by doing a bypass.
- check the clutch cutout switch isnt faulty by doing a bypass.