The fuel vent tube in my tank is partially clogged up. If I have a full tank everything is good, but once I get about 60 miles on the tank and I hit above 75 it starves out. In the process of determining that it’s the vent tube in my tank I’ve replaced the fuel screen, then the fuel peacock and check my vacuum lines. I also run an external fuel tank and when the bike starts to starve out I switch to it and the bike resumes to run fine as long as I shut off the peacock to the main tank. Earlier this month I made a quick run to Nova Scotia and it would starve out like clockwork at about the 60 mile mark when running on the freeway. It never once starved out in Canada, which may have something to do sea level and all that? When I got home to help to determine that the venting of the tank is the problem I took my spare key and popped the gas cap as I approached 60 and then ran it up to 80 with no problems. So here’s the question, how do I clear the vent pipe? I’ve run wire up as far as I can and put a length of hose on tube exit point and blew in it for a while and then ran some air through it with my compressor, with no improvement. I’m just about out of ideas. Thanks in advance for your help.