I don't monkey with my throttle trim once it's set...

I'vet tried the choke on ignition on and flip till it barks like the DA guys do around here, it works but usually shows some signs of flooding and takes 4 or 5 flips after it barks to start, then it's loaded up.

Once they've been run and the lines filled, cold takes 1 flip choke on, throttle idle, ignition off, then choke off, ignition on and it goes 1st or second flip. If it's warm all you have to do is turn on the ignition and usually 1st flip.

All engines will develop a personality, but this method seems to work well on all three of my ZDZ's and is just a variation of the manufacturer's suggested method.