So what do you guys use for the screw washers in your racks.
For years I've used Humfrees, these:
Humfree Rack Tabs from zZounds.com!
But I find it incredibly difficult to install these with big 40 pound power amps like my 50/50 or 2:90. They slide around too much when I'm trying to get the screw in the hole.
Would regular plastic washers work just as well in isolating the rack unit from the rack chassis? What do you use?