Display changes after seconds.

Unfortunately, it is for me to reload but not usable, not to say dangerous.
After calibration behaved 0.00 appears. As long as I put nothing on the scale that remains mostly the same way.
But I use the supplied shell and I tariere then, it always comes back before the display varies between 0,00 and 0,20g. This is in Grain (gn) and correspondingly high during filling can not be tolerated by powder.

And not the error occurs only when I lay my the calibration, but even if I put another item directly on the scale.