!!!!HELP!!!! haunting missfire wont leave!!!!

Fuseable link problem? Do you have ampmeter? Sometimes they create connection problems that are intermittent because all the electrical power runs through a connector on the rear of gauge. Theres an article on those showiing a switch to voltmeter. I'm including the link to on bottom. You're just going to have to start again with the basics, and weed out everything. Check that fuel tank, pickup, strainer sock in tank, fuel pump, etc.. Have fresh fuel. Could very well be water in fuel. Mike
http://www.madelectrical.com/electricaltech/amp-gauges.shtml