My speedo hasn't been working for ages and I worked out that it wasn't the cable or the gauge, so I got myself another speedo drive.

Today I drained the oil and pulled out the old drive, and the edges of the teeth on the gear do look pretty stuffed, but what has me worried is what I found in the oil...

[attachment=13017:attachment]

Sorry for the poor quality, but you get the idea.
Does anyone who has pulled a T50 apart before know what this clip is/does? Could it be the reason that I have no speedo?

Thanks Guys

Blake