I just got a 2006 v star 650. I have rebuilt the carburetor, replaced the ignition coils, synced the carburetors, replaced the petcock valve, replaced the fuel filter, and all the fuel lines. It still bogs down when I get up past 35 and will not go above 45 MPH. Is there anything I am missing? I have also set the mixture screws to where stock setting, meaning 2 1/2 turns from bottom.