The bike's running like crap lately so I took off the carbs to have a look.  I know the vacuum to the petcock goes on the right side of the left carb (if I remember correctly) but what about the spout on the other carb at the same location?  Is there supposed to be a line off of that or should it be capped?

it should be capped

Thats what it was!  Thank a bunch!  I should've known it was a vacuum leak.  Thanks again.