Another Weber question

Im running a 32/36 on my 89 b2200. I have been getting all the bugs worked out of it since It really didnt get driven much before I picked it up. The issue Im haveing now is if I dont start the truck for a few days the carb seems to drain dry. It takes awhile to get it fired up, lots of cranking and pumping. If I run it for awhile it will start right up the next day. Only does this if sitting for a few days. Is there a check valve I should be using? Or is this a typical weber thing? Any help would be greatly appreciated!
Kyle

sounds like you have an air leak in your fuel line. the pump pressurizes the fuel line. so i would check the fuel fittings first to see if any are loose,

jeremy