I had the same problem, with mine pal, it really struggled on warm starts. I check the the Crank Sensor and Cam Sensor, gave them a real good clean, and make sure they go back in properly otherwise it'll be same problem all over again.

You can also just give them a wiggle as they may have been lose at some point? And in some cases the spark will ark over to something thus not starting the engine on turn over.

Hope this helps.