All good points thank you. Air leaks are a pain to get rid off indeed so I'm getting a temp gauge to be safe.
The firs thing I did was to put a O-ring and clamp the intake to the carb with some pressure. But still got some air leaks on the intake connection to the intake head port. I did not know by then that the gasket had to be soaked in oil (Now I do it it that way).
I also was running without the head cylinder gasket to raise compression, but getting a good seal that way it's hard. I also notice when I removed the exhaust that despite the crush gasket it was not tight enough.
Can you guys tell me what torque specs you use for the Intake and exhausts bolts to get a good seal and not get the studs stripped ?