So, after scouring this forum for a couple of weeks, I'm caving and seeing if someone has had this happen to them. I have a converted Challenge car and can't fill the fuel with gas more than a thimble at a time. My old Roadster also had a fuel cell that was slow to fill, but this one is ridiculous. Maybe pump a couple tenths, then wait til it slowly and I mean slowly goes in and start again. Is this a tank venting issue? Thanks in advance