Bet you didn't read the mounting & ventilation requirements, either. So if you are an engineer, then why have you not bothered to install within spec? This makes any potential failure your own responsibility - I doubt the warranty would cover failure given an installation that does not comply with the basic mounting requirements.

I also have a tight installation, with two drives (and a compact amp in close proximity!) and the unit still has sufficient ventilation and does not get too hot at all. In fact it runs hotter on the bench on AC power - the unit is definitely cooler on withdrawal from the sled.

Have you mounted your unit over the heater? With no ventilation? Have you obstructed the airflow to the unit's ventilation holes?

One of the few remaining Mk1 owners... #00015