Hello, just in the last months of 2011 i purchased a 1971 Commando a US import to New Zealand not sure what model it was when new, So the problem is I cant make sense of the engine,frame,gearbox numbers. The numbers all match (# 146666) but it has the older style yokes and this matches the early frame ?. Problem is just about all 71s I have scene in photos seem to have later style yokes. I don't want to start the restoration till I can ID the bike correctly. Thanks.