Hard cold start- lack of fuel- UPDATED

Same problem here. I think fuel evaporation is the cause. If I start mine daily no problem. The electric pump should fix the problem. I have run nothing but AFB's on my 273. AFB's don't have any way the fuel can leak out of the bowl unless it evaporates. (as far as I know) I have tried 2 different fuel pumps too. (they are supposed to have a check valve in them to prevent drainback) Nothing I have done has solved the problem. tmm