Hi, Thanks for your help.

I have an older-style shimano octalink bottom bracket (Shimano 105 BB-5500 Bottom Bracket). It is installed in a Cannondale CAAD9 with a Ritchey cranket. There is some lateral play in the bottom bracket that concerns me.

The bottom bracket is lightly used and fairly new so if it is simply wear I am really surprised - although it could be. The bottom bracket is threaded all the way into the frame and very snug. Same for the adjusting cup on the non-drive side - very snug and threaded all the way in.

What could be causing the play? Is it simply worn out bearings? Is it that 105 BB-5500 is generally a crappy/loose bottom bracket? Can it be that for some reason that the adjusting cup cannot be tightened enough in my frame to remove the play? (From what I remember, the sealed units such as the BB-5500, do not provide any adjustment for play with the adjusting cup. It simply tightens into the frame and that is it.)

Any PRO tips are appreciated (including telling me I should just upgrade to a newer crankset and BB).

Thanks.