I have a Beckman Coulter GS-15R centrifuge with a S4180 rotor using four buckets. The centrifuge itself is level, but the rotor is not (the drive shaft is not quite vertical). This is causing the bottom of the buckets at low speeds to scrape against the thermistor and I think it is also causing imbalance issues (I can't run it even with empty buckets above 2000 rpm).
Any help on how to correct this? RE: Beckman Coulter - GS-15/GS-15R
