jetting advice for a M600

[heiwaz]

I want to jetting my M600...
I opened the airbox and muffler. I want to change the main jet (132.5) for a 148, and pilot jet (40) for a 42.5. It has got another jet (70) I think is the starter jet, it's correct? Should I change it, too?
The needle position is in the middle, should I change one positon up or down?
and the mixture screw?

[rata911]

148 for a main jet sounds a bit harsh. I have 145 Factory Pro jets in my M900 but just with a K&N, removed snorkels and a slighty better exhaust.
Although I'm not quite sure...was it FactoryPro or Dynojet using the same measurements as the Mikuni stock jets...?

[MingThe Merciless]

That's a big jump in main jet size. In the real world you'd probably never notice a
too small jet anyway, as it's effect is at or near full throttle. Do you EVER ride WFO
on the street? I didn't think so, me neither. More concern should be getting the
part throttle jetting correct. If this were my bike, I'd raise the needle one notch,
perhaps going up slightly on the pilot jet. The mixture screw adjustment ( if any)
will be determined once warmed, as you screw it in and out to find the max rpm
point. The starter jet is for the choke. Leave it alone. And remember, to RAISE the
needle, LOWER the clip position. It's amazing how many people get turned around
here.