I can't really remember how many tries it took but once you get it, it's easy. Line it up on a post it note and diagonally splice it, then use non stretchy tape. (I just use clear scotch tape that it thicker than normal). The key is to cut it exactly 105 cm. Too little and it won't fit and too loose and it won't track.
BTW, I fiddled with a Decca Jubilee once but my arm was too light for it. It needa a high mass arm. Can't speak for the Ortofon though.
BTW, I fiddled with a Decca Jubilee once but my arm was too light for it. It needa a high mass arm. Can't speak for the Ortofon though.