Sorry to hear you have not worked out your problem. Ironically I was considering trying to locate a Septum tonearm but am shying away as Pierre's company no longer seems to be operational and I can find no evidence that he is still in the business. It is a shame that he has apparently walked away from his work. Perhaps you can reach out to Tom Mackris of Galibier. He is a really nice guy and very talented designer. His email is: galibier_design@hotmail.com.
Alan
Alan