[Elecraft] 240-Volt Operation of KPA500

[N4CW at aol.com]

How do I go about changing from 120-Volt to 240-Volt operation of my  
KPA500? I hate to ruin that really
nice power cable by chopping off the plug and substituting a 15-Amp  
240-Volt plug; but if that's the way to
do it, I'll get another cable and that way I'll have both AC Voltage (USA)  
capabilites. 
Of course I understand about the fuses and properly setting the fuse  
assembly to reflect the input voltage!
Any caveats from anybody who has already done this?
73, Bert N4CW