I have a SSP3000B that works without a hitch... but I’m adding a rear upper ILS and it won’t save the ILS enable to the control head. I can read and program changes to the control head, but when I check the rear upper ILS enable box and program the setting to the control head, it’s not saving that change. The ILS bar will work in warn and arrow functions, but I can’t enable the the ILS system to sync with the LB. Any ideas why? Next step may be to default and reprogram the control head.