RE: My DLE 55 does not like to pull fuel to the carb after it sets for a while.
Some are soldering the hole shut, myself I think that you have another issue, like maybe a air leak in the fuel supply or the reeds are not sealing good. One other item to check is the pulse line they get hard and leak at times and won't pump properly. Of course there is always the internal carb issues, a dirty screen can also cause this. But I would do the simple stuff to start off with.