Ok, so we got the petcock kit in finally. It came all the way from canada so it took a while. But, it's installed and the leak is gone.
But the bike still runs like crap...hmmm....
Well, after some tinkering, we pulled the bowls of one of the carbs. Seems the floats are sticking a bit. Guess the bike sat a bit longer than I thought. But we unstuck the one carb, then started the bike back up. It ran a little better, so we tapped on all the carbs with a screw driver handle and must have loosened all the floats as the bike runs well again. Took it for a short run and wound it up to around 100. All seems well for the moment.
Unfortunately for me, I have to go to a company sponsored class for a couple weeks so I won't be able to ride till I get back. Oh well, at least it's running again.
Maybe when I get back we'll try the 4-1 header again. But then maybe not; I've always liked the way the bike sounds. Maybe I can find a decent stock system. We'll see.