Need Help ce6000-60plus

Hi guys,

I recently took delivery of a brand new ce6000-60plus and have it all setup.

Settings straight out the box, installed the driver along with the cutter controller software, Graphtec studio and cutting master 4 for Illustrator.

Offset is set to 0
speed as low as 1
blade depth has been checked, scrap vinyl test done and it cuts the vinyl without cutting backing paper.
have also ran the force/offset test on the cutter itself and get same results. vinyl is cut but backing paper is intact.

when i do cuts, lines aren't coming out as straight as they should and curves are coming out wobbly. Not a perfect circle.

Shapes have been created directly in graphtec studio and illustrator with the same results.
It also doesn't matter if i use signblazer, signcut, cutting master or graphtec studio i get the same results.

Have also tried a second machine and same results.

However, if i send the same design to one of my cheaper vinyl cutter it comes out perfect?

I did notice the carraige although it moves across the belt fine, it does have some play if you were to pull/push it when standing facing it. as if it moves off away from the rail and makes a knocking noise.

any help would be amazing right now Thank you