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So Phil don’t quite understand what the problem is here. The crankcase letters are always the easiest to read, stamped into the back of the lower casing. Very very easy to read. The crank markings can be quite difficult to read, is that the problem?
Fig 144 on page 49 Phil
Unless for some reason the shells have spun in the crankcase it’s fairly safe to assume they’ll remain the same diameter. Again with the crank, if it looks ok it most likely is the same.Fairly common to see different numbers on the crank Phil