Thanks CyberJack and rolla16v.
Yes my obsession with cylinder mowers goes back many decades watching my dad mow the couch lawn with an old Atco with its fuel tank wired to the handlebars. Only about ten years ago I bought a house with couch lawn, then soon got an old Scott Bonnar with a Kirby engine. I then gust kept on upgrading then started doing them up. I like the style of the Scottys and the fact that parts are readily available and they were Australian made, in fact I believe some of the parts were actually made here in Toowoomba.