You said you went to Lowes for line, is this steel or rubber, and what are you using? Sometimes the Lowes stuff just doesn't cut it and you need the automotive stuff, that's why I'm asking.
I've heard much more bad than good about Optima batteries. You may want to consider using a regular battery, before that Optima dies on you again.
It sounds like you're on the right track, make sure there is spark and fuel, and it has to do something. I assume you're still running it injected?
