What about a custom restrictor mod?
I remember reading about this on the thread "Talk Coffee Thermostability Upgrade" http://coffeesnobs.com.au/YaBB.pl?num=1163933911#3
Been thinking of one of these as I leave my machine on all day on weekends/when home. You never know what youre going to get when you walk up to it and lift the lever...it all depends on how long its been sitting idle!
Certainly a less costly option than buying another machine. ;)