OK! I finally fixed the problem. It was the stupid petcock. It only flows gas in the on position and you have to turn it right to the very stop. I had tried it on reserve and on. When it was in the on position, it wasn't turned far enough and when you have it on reserve, it doesn't open. I found this out by taking my tank off and playing with the petcock till gas started to come out.
The switch is really really stiff which is why I didn't have it turned right to the stop. I had to use pliers to get it there. Does this mean its rusted and I have to worry about having a rusty gas tank or what?
It starts no problem now. I changed the plugs anyway.
Just to let you know, the previous owner had it bored out to 771cc with Wiseco pistons. When I took my old plugs out, they were different than the ones that I bought. they were NGKs but the last letter was different. the old ones had a V and the factory ones have an S. Is this the heat range? does anyone know what heat range I should be running?
The last owner doesn't really know much. He didn't do any of his own work.
Sorry this is so long. I got a little carried away.