I am having to switch to reserve after only going about 95 to 100 miles. This is at about 2.5 gallons or so. The specs say my tank holds 3.96 gallons. I highly doubt the reserve is supposed to be 1.45 gallons.
I checked the tank vent line and its all clear. In my search for an answer I have read that people with the same bike as mine are going 130 to 150 miles before needing to switch to reserve. Everything is stock except the pipes are debaffled and all the EPA crap is removed and capped, except for the vent line to the petcock, that is still tied to the airbox like factory