Michael (and all) thank you for your help. As usual, this is the greatest user forum on the net.

I made the circular text in Illustrator and then "created outlines" and the brought it into Moi. This was then extruded and scaled and positioned over the dome of the wheel. The dome was then duplicated and moved above itself .xx units (I forget LOL) This piece was then used for a boolean difference to give the letters a curve that matches the domed face of the wheel.

Does that makes sense?

I'm wondering if the little problem piece started with Illustrator, or when it was extruded.

Thanks again!

Cheers,

Chris =)