Ultegra SL Cranks and BB - Coming Loose

plug1n Posts: 204
edited December 2009 in Workshop
When I got on the turbo trainer today ( :cry: bl**dy snow), I noticed some play in the cranks. It turned out that the bottom bracket cups were both a bit loose.

Bike is 13 months old and has done maybe 2,500 miles, is this normal?

Anyway I had the tools so fixed the problem, applying the 35-50 nm torque that the Shimano tech docs specify (probably about as much as I could easily apply with Halfrauds Hollowtech tool).

Also, what is the point of the "stopper plate"? This is so flimsy, I would not think it has any mechanical or safety benefit.