Dynavector DV 505 anti-skating question

I purchased recently a DV505. I'm following the indications in the user manual for setting up correctly all the adjustments.
Concerning the anti-skating I think I have an issue. If I place the anti-skating weight as indicated in the user manual then the correction is too strong pushing the arm back. In fact I can operate without anti-skating at all. Is this pointing a bad setting elsewhere ? I cannot figure out what could be the origin as this arm have few adjustments.
Any idea ?
Thanks a lot