Hi, folks. I recently 'inherited' a 2000 Raleigh SC30, and I'm getting a tad carried away/obsessed by the technical mumbo-jumbo of the bike. www.epinions.com says 'Rear Cogs 7-speed freewheel, 11 - 34 teeth,' but doesn't get anymore specific than that. Worse, the pdf of the owner's manual doesn't, either. Short of getting on my hands & knees and counting the teeth on each of the inner 2-through 6 cogs, how do I determine the size/number of teeth of the inner cogs?