The problem is actually with your easel, or at least with the appropriateness of your easel when using a D2V - some easels require more space around them than others.
Some times you can solve this by rotating the easel 90 degrees or 180 degrees. It may not be as convenient to operate in that orientation, but it also might be quite usable, once you get used to it.
If you are doing smaller than 16"x16" enlargements, consider using a longer lens, like a 90mm or 105mm. The combination of the slanted column and the fact that the longer lens mandates raising the head higher will move the centre of the image farther from the rails.
A change to wall mounting of the support rails can also solve the problem.
If the problem only arises with smaller than 16"x16" enlargements, you could also consider buying a second, smaller easel.
I've gone the other way with my D6. My main easel is a Saunders 11"x14" and for 16"x20" prints I use a much less desirable 2 blade easel.