I bought this Paramount track about a month ago, and I'm loving it. Some threads here recently have inspired me to get some additional info on the cranks that are on the bike. I believe they are vintage Dura Ace EX pista cranks. They are 170mm. I thought, however, that the vintage EX were NJS, and I don't see a stamp on these anywhere. Was I misinformed? Any additional info is greatly appreciated!