I'm not sure I understand your answer to the ventilation and circulation question on the troubleshooting report.

I see that you have circulation fans. But, do you have a way to exhaust the hot air in your grow area to somewhere else?

Edit: Went back and looked at your pics closely. You have an air cooled reflector, correct? Is there glass covering your MH bulb or is the reflector open? Where are you venting the hot air from lamp?