My Z is having a problem starting once operating temp has been reached, it doesn't do it all the time but often enough, if I don't kick the revs up the engine will die or start really weakly as soon as I apply some jip while it's starting it starts perfect

On a cold start it starts everytime perfectly without fail and idles nicely

But it's once its been driven for a while then the problem starts I'll link a video below

​​​​​​https://youtu.be/nIrWhvasC0s