I just purchased a K&N air filter (TB-9091) for my 2003 Trophy 1200. This filter requires minor modification to the air box. The air box has 6 self tapping screws across the top, 5 across the bottom and 2 machine screws on each side. The modification simply requires removing the 4 tabs from the filter cage that the machine screws pass through. There are no corresponding holes in the filter for the machine screws. There is one hole on each side of the filter but they don't line up with either of the existing holes on the cage. Do I punch holes in the filter for the machine screws to pass through or just forget the screws and plug the holes?