Fuel Hose With Check Valve

[flatford8]

I've also wondered about this valve for my '50. I thought the fuel was percolating out of the bowl and I put on a spacer under the carb. That seems to help so I think I'll get a check valve fuel hose too.
Where did you guys go in Maine? If I had known we had "Barnah's" in the area I would have shown some hospitality ........ Mark