Makerbot Replicator Quiet Fan mod

I've only had my Makerbot Replicator for less than a week, and I was already tired of the level of fan noise when the machine is idle. My job requires me to be on the phone when I work from home, and people could hear the fan blasting over the phone. So, I tracked down a larger, lower RPM fan to replace the tiny, angry little fan in the Replicator.

I tried doing a solid mount with a metal bracket, but too much fan vibration was being transferred to the case. The noise was only moderately bet