Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
I had the same problem but after checking under different lights, I saw the marks on the crank - really looked like a 2 year olds writing, almost a scribble! Having a real look might save you a some work with the plastiguage - took me ages to spot the marks on my crankPhil