Hi Mark,
talk to Stephen, he really does know this set of barrels.
I took his advice when I ran them, even with my dodgy jetting, they still went like stink.
When I eventually got used to them, even with the crappy jetting, the thing was pulling wheelies away from the lights & power wheelies in second in the p!ssing rain. Was lifting the front in third too.
Was super safe, if a little rough through the rev range,the way I had it.
I know you`ve had it tuned by a reputable tuner. It`s just, I would think Stephen Probably knows NSR motors a little more than him.
You could do a lot worse than giving Steve a p.m.
Cheers,
Roy.