Which version of KP and KPS? You shouldn't need custom voltages any more. Install KP50> without KPS and you will have 250-600 SR 1 & 2. SR will sort all the voltages out for you. You have probably got a profile saved somewhere that is loading via your start script. I am pretty sure you don't need a startup script anymore either. Save a profile then load it with the "kernel-config load myprofile" whats your Code: sudo kernel-config show default show?
sudo kernel-config show default