My question regards converting my stock 31 deluxe roadster lights to quartz bulbs. I took the bucket apart and have one (1) bulb inside. I'm assuming that this is correct as I have cowl lights. The reflector is in perfect condition but has a protrusion on the rear where the bulb socket enters and is secured. In several Model A parts catalogues there is a conversion kit offered for quartz bulbs. All kits require enlargement of the socket hole to accept the larger quartz bulb. This is where I am confused. How would one enlarge the socket hole when there is an approximate 1" protrusion on the rear of the reflector?