There are three formats that you can enter coordinates for a waymark,
1.) Degrees, minutes, seconds (DMS)
2.) Degrees and minutes (MinDec) - the default
3.) Decimal Degrees (DegDec)
The default format used on waymarks for entering and displaying is format 2.
The reading from your GPSr is in format 3. You can change the pop-up menu to format 3 before entering your coordinates. After you save the waymark, it will be converted and displayed in format 2.
You might look at settings on your GPSr to see if you can change its display to format 2 for convenient usage at waymarking.com. Otherwise, you will need to change the popup menu when entering coordinates.
HTH
DougK