Hi all, I've just completed my last option board - the KIO2 - and I have to modify the control board (in my case Rev A). Does anybody know if the rig will work normally if the mods to the control board are done but the KIO2 is _not_ installed? 145, Pete PE1MHO - G7ECN K2 #2768 -- You only live once. Get it right, and once will be enough.