I actually did try the fan mod. Tested it before installing and went hmm it is quiet but doesn't move much air. Made sure the transistor "channel" was sealed and with the fan shroud to maximize throughput. The ep ran hot after having the hulk in the room and playing music afterwards for couple solid hours. It wasn't hot enough to shut down on it's own, but was hot enough to the touch that other rack items were getting warmer. I rechecked fan direction and everything was correct. My girl recommended to just put back the factory fan and try it. Sometimes we should listen lol. Moves plenty of air and now runs cooler with my use. The rack(35RU) has it's own space as we relocate the washer and dryer.
At the moment "roominator" kits from samedaymusic for sound treatment. Some panels are diy, but the corners are still the lenrd bass traps. Actually they do an awesome job.
