THe Eddy carbs have that problem.

I would bet you have an iron intake. Mine did that but it has been better with an aluminum one. I'm not sure why that seems to matter as the problem should be there the next day and not wait a few but ????????

Could also have to do with having a fuel line with a slight "P trap" near the carb that my other ones that had more trouble didn't have. Maybe fab up a line that has something like that going on.

Maybe you could get one of those dual feed lines for the carb and drill the driver side out for it to work. That would speed up the process listed above.