ok, bike starts fine, idles fine, when i fully open the throttle, it bogs down: no response.  if i roll the throttle slowly, the RPM's hit nicely.  FYI:  When I took the tank off and started the bike, I opened up the throttle while my hand was over the air filter, creating a vacuum, and it hit nicely.  Troubleshoot??

Thanks,
Neubie

Running Lean.    Have you done any mods to it?  Exhaust/Intake?

if no then Go buy new jets  125main, 40pilot, and put one washer under the needle.  

Its bogging down because it is getting too much air and not enough gas.