Replaced the ignition system because the other one was faulty but it still has starting difficulties, recplaced plugs, leads, and still has trouble getting it to start first kick. What could this be?

test the computer... See if any sensors are throwing up dodgy readings... Could be a odd reading from the crank or cam and struggling to know when to fire... Could be a dodgy coil pack... Possibly breaking down and tracking...

Cheers,
tim

ok thanks heaps