This is my cnc.

It's all gone pretty well but I'm having some trouble truing up the axis. Does anyone have any ideas that could help me? I only have access to basic tools at home like a hand drill etc. I was thinking I could get someone with a CNC or Waterjet to cut some plates that would force hold the rail and lead screw brackets into the right dimensions, but I'm open to any other ideas also?
Does anyone know A good CNC/Waterjet place in the Wellington New Zealand region?
Thanks.