Hi Team,   
I’m hoping to get some advice on adding Way Points into INS Computer when in flight. I have no problems entering the Northern Coordinates fine; however, every time I try and enter the Eastern coordinates they reset to zero when I select INS.    
Whilst I’ve been watching the YouTube tutorials and reading the manual, I cannot figure this out.    
Any advice offered would be sincerely appreciated.   
Respectfully,   
Matt (Tripps)