Riding over Anzac bridge in Sydney yesterday evening, first 5km+ trip on a 1971 cb500 I've been working on - sharp learning curve. VERY worried I'd break down on my trip, bike went great on the way into the city, on the way out a few hours later, get (just) to the top of bridge and carbs flood and die so I'm thinking SHIIIIIT, rolling down the 4 lane bridge in neutral hoping no one bulldozes through me. Get to the bottom of the hill where it inclines up again before there's anywhere to pull over and have to stop before lights. Jump off bike, a few cars pass. have to push it up the hill and up onto pavement like a mad man. Finally get safe, jump off bike thinking wtf I swear it has bean running lean as exhaust is not stock but that sounded/ felt like too much fuel!!! scratch head for a few minutes turn choke off ride away idiot.