Doesn't the club at Wanneroo still operate on a Wednesday? (can't remember the exact venue, its been a long while.....) Also you could try thr Fly By Night club in Fremantle. The man who knows all about the Perth scene is Ray Downes, but I understand he returned to the UK to live in Cumbria recently. Another possible source of info would be Bob Rummery who lives in Sorrento just north of Perth - best of luck.