Hi Peter,
What concerns you about your NEQ6 pro mount's performance enough to consider swapping motors, drive electronics etc? Do you have any reason / test results that cause you to suspect 1. poor tracking or 2. poor guiding perfomance?
Otherwise it might be a case of : If it ain't broke .... ... ... This would especially be so if the total rms guiding error of your mount is say <= 0.7 arc seconds or better.
Best
JA
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