[Elecraft] Quieter fans on the K3 ?

[Harry Yingst]

A few years ago I replaced the stock fans on my K3 with the Noctua NF-A6x25 FLX fans and rubber mounts.  The new ones are much quieter and the low rumble is gone.

Last night I got thinking about the fans and about the rumble of the stock ones. 
The question I now have is I wonder if the low rumble would be cured with just the use of the rubber mounts removing the need for new fans.

If someone is looking to quiet their fans wants to experiment with just replacing the mounting screws with the rubber mounts.  I would be interested in knowing how much of a change they notice.

Thank you