I own a 2001 Honda XR650R uncorked and I'm tired of the problems with throttle response, jetting and idle, etc. I ride at elevations ranging from 500ft to 8500ft. I live at 3000ft. I want to change out my carb to either a Eldebrock 3115 or Mikuni 40mm pumper. Who has each and what do you think is a better choice? Doesn't the Eldebrock have external adjustments?