They were never difficult to setup, it was more of the end user who was not capable enough. Also Michell did not start to make turntables till 1973 when my father moved out of his factory at 2 Theobald Street, Borehamwood and to a much bigger factory in Ireland and gave Michell a licsense to produce the Hydraulic which was cancelled in November 1973
Regards
Michael Gammon www.transcriptors.net