Gas odors

[DanEC]

I'm trying to track down why my car reeks of gas for about 2 days after driving it. I'm used to having good old exhaust fume odor in the garage after driving one of my old cars but the Cobra takes it to a new level and it is definately a gas stench instead of exhaust odor. I suspected fuel was perking off in my carb after it was hot but in removing the air cleaner after a drive, I don't see any gas flowing into the carb throats. Just in case I've just fit a couple 1/4 inch gaskets under the carbs and I will see if that makes any difference. I haven't had a chance to drive it since then. The tank in the ERA is vented so I assume the gas caps are non-vented, as is my Ceadress street cap. I carefully cracked open the gas cap after a recent drive and didn't sense any built up pressure so it seems to be venting OK.

I can't locate any seeps so far in all of the plumbing but I am wondering if one of my Holley 600 carbs is leaking some fuel into the intake. My Holley carbs are bare bones models and don't have externally adjustable float levels so it's not easy to check them. The base gasket on the front carb was covered with gas when I pulled it out to replace with the 1/4 inch one, but I may have tilted the carb enough in lifting it up to have sloshed some fuel out of the bowl through the idle slot or bleeds. This may just speed up my decision to get a custom set of BJ/BK restoration carbs.

Any other ideas that I might check out?

Thanks

Correction - The Ceandess gas cap is vented. Possibly I should seal off it's vent??