Well here goes... Aluminium frame router design

[CharlieRam]

I used a mic, but only a quick check and I may of been a bit over on the pressure, I was more bothered about dropping it in the swarf! I will measure a good one tommorow and get back to you, cheers. Do you think having one ball missing could cause the notchy tight fit? I'm thinking about removing all the balls and giving it a good clean incase the missing ball is actually in bits causing the notchy feel. Good idea or not? It doesn't look too hard, just a bit time consuming.