Contact Arcam as they can supply the cog.
The grease they used eventually attacks the type of plastic used for the cog and the teeth get stripped off the small cog. Its a common problem.
Stephen
April 2010
I can answer this question...
How can I fix my cd transport drawer on arcam alpha 5? ?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix in-car audio.