hello everybody ! i just acquired a musicmaster point one five turntable with a velevet touch clone tonearm ( aiwa od-90 ) i am haveing trouble adjusting or setting up the speed selector and need to know exactley where or how to install the tonearm on a new plinth that i built for it . can anybody supply me with a copy of the service manual or at least photos of the underside so i can see exactley how the speed selector control is set up .