Thank you Ian I couldn't do it with out help from this web site and it's friendly members

Here is the two images of the x-axis bearings they should be in line but as you can see the right one is not tight to the MDF (about 1.5mm gap) But I can move it by hand.

Click image for larger version.  Name: IMGP1188.jpg  Views: 389  Size: 182.0 KB  ID: 4731 this is the left side

Click image for larger version.  Name: IMGP1187.jpg  Views: 457  Size: 174.8 KB  ID: 4732 this is the right side

Is this just crabbing or should it be in line as It's not under any load ??

James