I seem to have a vacuum leak. When I get to a stop I'll idle at 2,000 for a couple seconds before it settles down. Seems to do this all the time now. I haven't had the carbs out in a year but I did notice that my front cylinder carb side boot doesn't look as tight as the others. I have the screw on the bottom but I'm not able to tighten it any more because of the angle on the screw head. How do you position that clamp?

-Robert

The boots themselves have a definite position and it is marked on the boot itself to line up with the engine mark.

As far as the clamps go....any position should work as long as you can reach the screw to tighten them.
Maybe you need to flip or rotate the clamp a bit to give you clearance if the screw hits something and prevents tightening it.