Dear Uwe

Before heating up here and there, my advice is:
Have you checked your capillaries are adjusted properly? Is the voltage
signal equal in both sample and standard ports, using 44 cup? If not, try to
adjust them by thightening both thrust screws lightly. 

I hope this may help you
Rafael Núñez Gómez
Estación Experimental del Zaidín (C.S.I.C.)
Profesor Albareda 1, 18008
Granada, Spain
Tf 34 58 121011
Fax 34 58 129600
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