I have a 1994 Baja 272 with a 454 Magnum and a Carter/Weber carb. I have a problem with warm starts. I have to give full trottle to get it to start. Cold starts are great and hot starts are fine. It only happens when I been floating for an hour or two after a cruise. The electric choke seems to be working ok. The idle mixture screws didn't seem to adjust easily....what I mean is it wasent real obvious where the too lean or too rich points were, so I took my best guess and then set them in the midle of the rich/lean points....Seems like some kind of vapor lock....Any other ideas?