I am installing a set Dakota Gauges into my 70 Challenger. T he clock and odometer reset knobs do no not protrude thru the woodgrain bezel like the 70 OE gauges di ga. I ordered a woodgrain bezel for 72-74 EBody that does not have holes for the knobs. QUESTION, what is the 1 inch round hole in the right side of the bezel used for? (that be in the part of the bezel after it wraps around to the right and goes perpendicular to the dash THANX