I just got a Garmin Striker 7sv and still learning how to use it. I have been watching Utube videos to help with learning, so I am attempting to enter some waypoints of some state reefs to get use to how this unit operates. The longitude numbers go in just fine but when I try to enter the latitude numbers in minutes and seconds the numbers over 5 won't enter. Example W 093*26.789 I only get the minute number between 1-5 highlighted to enter. Am I doing something wrong or could there be a problem with my unit? This is not a touch screen unit, you have to press the check mark to enter numbers or letters.