Swapped wiring over with y axis but problem remained
the bottom retaining bolt holding the motor to the threaded rod was a tad loose
i undone it and removed the motor and spacer. The bolts holding the sliding rails were also a tad loose. I tightened them up and tried it and it was much better
i re fastened all the bolts and am now doing a test cut
all seems good at the moment
thanks to you all
im making a key ring out of acrylic I've alllready made a coaster I will try and load up images later
thanks guys