[Elecraft] KPA500 in Operate when powered on

[paule408 at yahoo.com]

I have two KPA500 amplifiers that I use with a remote station. Both have the latest firmware. 
I have these configured to go into Operate mode when powered on, however I have many issues getting this setting to "stick". In other words, when remotely powered on, they come up in Standby despite the setting to come on in Operate. 
Firmware is up to date. Anyone know a fix for this?
Thanks,
Paul N6PSEpauln6pse at gmail.com