Sorry it's been so long reporting back but I've been busy trying to resolve this. I think I have a serious vacuum leak. A friend has a smoke machine and I'd like to hook it up to see what the results are. In order to do this, I'll need to block off all the ports. I can think of a few and want to make sure I'm not missing anything.

1. Ported vacuum on middle carb
2. Intake port
3. PVC port on middle carb

What else is there?

Some will say spray carb cleaner but I'm too afraid to do that. Others will say use propane but since fan is on engine, I'm not sure how reliable that is.

BTW-Over the weekend I replaced the intake gaskets and this didn't help or it did and I have another leak.

Thanks for the help