Looking to adjust my vac advance on my Mopar electronic ignition. From what I have read, there's a 3/32 allen screw inside the canister to achieve this. My problem is, the Edelbrock Performer manifold I have has a feature that is in the way of me getting an allen wrench in this spot. I could get to it if I pulled the distributor up just a short distance (1" or so). Do I need to worry about the oil pump gear alignment or anything else by pulling the distributor up this small amount, or does it only come into play if I remove the distributor completely? Hope thois makes sense.