My roof contractor placed ridge vents on all peaks on my home, including the dormers. So, I have the main attic space, which is vented by a ridge vent running the entire length. I have plenty of soffit vents as intake; while the dormer have none. The dormers now have ridge vents on their peaks and they are just shy of the main house's peak, but about a foot or two. The dormer attic spaces are open to the main space.
I know that it is okay to vent the dormers if they peaks are at the same height, and that if they are lower they could act as intakes. Is a foot or two difference something to worry about? Are the dormer ridge vents still going to exhaust air or are they going to now short circuit the system?