Okay Mark and Jazz,

Here is an idea for the rails on the Y axis
Click image for larger version.  Name: Y axis idea.jpg  Views: 483  Size: 43.8 KB  ID: 4548

The leadscrew will run down the channel between the two rail supports and the back plate will be bolted to it and the the uprights. At that point I think I will be able to move the spindle closer to centre that way.

I am going to get some sleep and get on this tomorrow. Thanks for all the input folks and will work on things to the best possible.

Michael