Sounds like they haven't done it right, mine has no flat spot or poor running low down after the Yamaha reflash. Not sure if power commander would put it right I've never used one, I have got kev's O2 controller though and that is fanfoookintastic.
A vee four and an inline triple, the two best sounds in motorcycling. [emoji101]
A vee four and an inline triple, the two best sounds in motorcycling. [emoji101]