At one time early Lucas distributor bits were unobtainable and I know there were various dodges using other bits (in my case involving a Hillman Minx !).
The person who might be able to help is the bike alternator specialist :
Roy Price on 01480 473225. He recently reconditioned a 1953 Lucas DKX (non Scott) distributor for me at a very reasonable cost and turned it around in a week. If the Scott network can’t help it is worth a phone call.