Hey Yam - I'm having the Kone problem you had (replaced an Orange 4x12 with Kemper Kones) when you fixed it by doing a system reset - is this a factory reset? Did you re-load the latest OS after that? Why do you think that fixed it?
I'm still having issues. When I boot up I have to reset the reverb 100% of the time. Then I have to press the restore system defaults button. Then it sounds great. But when you switch rigs you often have to reset the defaults again.