Just drained and refilled my primary on my '08 RG. Manual says 38 oz. to bring it to the bottom edge of the clutch pack. I put in about 34 oz. to bring it to the proper level when upright. Do I need to put in a few more oz. or leave it be? Don't want to overfill. I'd like to meet the HD rocket scientist that did away with the trap door for refilling.