I dont like the idea of any under balance myself for the reasons stated above. But thats just MO.

In R5P7,s thread "Hey 40Ford Need some Info" he gives a link to Speedtalk. Go take a read,

Some of the guys/builders are in favor of a underbalance. Others a perfect 0 balance, and yet others a 1% to 3% overbalance.

Im in the Slight overbalance camp. mike