Just wondering where most of you have your Ultra or Plus2 tuned. also does it matter which port is plugged for 20hz, the top or bottom? i gave the 20hz a try but did not stick the plug all the way down in the port. now looking at the manuel it says to drive it in the port about 1 inch from being flush. when i did the 20hz i had it sticking out several inches, would that make much difference?