November 18, 20223 yr I used the bundle coupon to purchase the RXP 750/650. After installing the trainer only the GTN750 shows up. I can click on the 750 and it give options to change to 650. When I select the 650 it will work in the trainer. When I go to P3D v5.3 and try to load in a default aircraft and select 750 for unit #1 and 650 for unit#2 both units will appear in the stack but but only the 750 will turn on and function. Everything appears to work OK except when I go to the utility button to bring up the checklist function does not appear. I thought I would see if there were any suggestions before I delete and re download/install. Thank Dick
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