Ward, you are right. I took b10 from memory, but actually it is b11 which you have to select to suppress the mismatch test. Using the Run-Motors frame, bring both axis back to 5° Execute an search Zero deselect b10 and select b11, then click PutRAM and also Write to EEProm. select Sun I will have to correct the documents accordingly. Sorry for the misinformation and all the best. Robert