yes, Sintratec try to help where they can do.
@fred_dot_u: You will not need to fill the chamber completly. For calibration i think about 3 cm powder will be enough. At the beginning you will have to calibrate your temperature. If you have a lot of warping mostly your print will go autamaticly into trash. :-)
Keep aware the the glass is clean and is not between your IR sensor. If this happens your temperature will not be correct.