setup pro-ject debut carbon


I set up my debut carbon turntable according to instruction but when I lower thr tonearm onto the record with the lift the tonearm shifts outward as it decends. What causes this to occur? thanks
normk
Two things can possibly cause this:
1. Make sure the table is level
2. Check your anti-skating adjustment
Thanks for the replys, I have already checked and the level is ok, but will recheck the anti-skating.
yes I did get the turntable going, The anti-skating was set right, but the tracking force was set wrong. I saw a setup video for the pro-ject on youtube and saw the mistake I made and redid it. The table now sounds great. Thank for all the help