Ive got an idea, introduce them to the choke/enricher circuit.
1 twist, pull the choke, kick it. It'll run.
Bumping the pilot so it starts easy when it's cold will just make it super rich when it's warmed up.
First, get it fully warmed up, and adjust the fuel screw to the highest idle speed, then readjust the idle speed to the correct setting. When the fuel screw is wrong, its also tough to start. When its right, they start easy.