No spark when warm

[rokmon1]

I have a 82 75hp , that starts great when cold, but after running for 10 minutes and then trying to restart it, there is no spark. After it cools for a while it will start. I have replaced the ignition module, spark plugs and key switch. Please help!!!

[boats.net]

Need to test charge coil trigger coils and power pack output with a peak reading voltmeter to see if within specs.