What with work, clouds, Christmas commitments and the reat all I really did not need my DEC axis to play up when it was finally clear - so sure enough I had large jumps at irregular intervals resulting is large corrections and oscillations.
Most of my lights were messed up but I think I have found the fault (loose CW shaft). In the mean time it has been cloudy again so I went back to process what I had...the results are attached.
