Hi I'm Devin and I'm new to your site.  I just did the Raptor petcock mod on my '99 Savage and when I took it for a ride around the block the motor started acting like it was starving for fuel, when I pulled over and looked at the fuel filter I could see air bubbles and in order for me to get it started again I had to remove the fuel cap.  My question is when I rode dirt bikes there was a vent line attached to the fuel cap so fuel would flow, shouldn't there be some kind of vent for the Savage tank to do the samething?

Thanks, I'll check it tonight