Need some help if possible.
I have built the printer (2 weeks ago) but hit a snag.
What works

I can move it manually using th emanual controls in repetier.
All the temp things works and palstic comes out.
If I press home it moves it to the front left of the bed.
All seems good so far.
Where it goes wrong

If I try and print anything it goes to the middle and prints the very first part of the object (EG a square).
It then proceeds to print a flat christmas tree of zero height gradually going towards Y max where it proceeds to try and kill itself by bang up agiant the end.
(It does the xmas tree thing no matter the object in the end. They are not desirable in any way)
So after 2 weeks I and rechecking it all I dont know where to start, be great if I could get some help. I think its something easy but I just cant think anymore. I will ernd up breaking it if I keep this up

Thanks in advance from Holland.
Neil