If it's cold, flood it, if it's hot, mix to rich, give it 1/4 throttle and hit the switch
And if that doesn't work - flood it.
The answer to nearly any start problem is to flood it! I've gotten into trouble flooding Lyc's. But never the TSIO 360. BTW, a Pitts with no electrics and a metal prop is a bugger when you flood its injected Lyc.