CPX3500 calibration

[Nik77]

Hi all,
do you have a Dropp Mass calibration form to 3DSystem CPX-3500 Max?
Or, do you know an alternative method for calibration CPX or HD3500?
The Dropp Mass method does not exactly to calibrate machine, for example Dropp Mass is ok,
i do start the printing with a few parts and these is ok,
the next print i messed up all print plate but the quality is orrible, in particular Hi Cast Material in CPX.
The material is new and the vaccum is ok.

thanks