Think I have the bolt problem sorted now...will update soon. Now on to the next problem...

I was playing with my ball...screws last night before bed ;) I've noticed that the Z-axis ballnut (RM1605-C7) seems a little notchy and not smooth. As if there could be some swarf or something inside? The ballscrews are covered in a light machine oil (I assume to prevent oxidisation). Do I needto strip down and clean everything before use? Do the ballnuts require greasing first?

On a similar note, is there any specific preparation I need to do to my linear rails/bearings before use? (I need to assemble the HIWIN ones).

Cheers,

Dave