Snips mate.....
Take exception to the blanket one/two per attempt at a start.....
Over priming usually leads to engine fires rather than the engine firing!
Your POH should be clear about the number and sequence of events.
My advice, use the primer as little as possible - but when you do prime - give your warning as you start the priming process, then immediately after the 'pumping' stroke turn the switch to start, don't give the vapour time to evaporate.
Happy starting.