Hey guys, i'm having an issue with the carb on my 22r. it has an aftermarket National brand carb (supposed to be a direct oem replacement). My issue is when the truck is parked facing downhill after the engine is warm the engine will stumble and sputter and nearly stall out when starting from a stop (low rpms) it idles normally, and accelerates normally once it gets past that point, around 2000 rpms or more is fine. it takes a good stretch of road where you can drive it harder and it will go back to normal. It mostly only happens when parking downhill, sometimes more often on very hot days, and makes it almost impossible to do any sort of slow speed offroading. none of my fuel lines are too close to the engine or anything very hot but when it is happening you can smell fuel, which makes me think the float bowl is flooding, but whenever i check the level, it is always in the middle of the sight glass.

it only happens when starting from a stop or shifting into second, any situation where i might be using the low end rpm, it seems like it is getting far too much fuel, do you think my carb might just need a rebuild? could it be the AAP (auxiliary accerator pump)? or something more?