I will check the other forum for assistance, thanks.
The fuel line doesn't really run past anything that is really hot. Not to mention that allowing the motor to cool, overnight, doesn't always solve the issue.
I doubt the problem is crud in the tank related. Over this past winter we replaced the fuel tank with a brand new one. The problem existed before and after the change. I will admit, although we replaced the tank and the filter, we didn't replace the fuel line itself. It looked in good shape, and no gunk came out when we blew it out with compressed air.
If it was a fuel additive or such causing the problem, wouldn't it have issues all the time? And without changing fuels, what would then make the issue go away?
I'm not trying to discount anyone's ideas. We have been working at this problem for a long time and are quite frustrated. Thanks for the help.