Demo of Curved Text

Try not use the stock Garmin font, instead use custom font for curved text, and limit only the characters that data field will display (For example, only digits).  That will reduce the size of prg file tremendously.

Do not place curved text crossing the horizontal line.  Below the center of horizontal line, text will rotate extra 180 degrees, so if you have data field with text cross the horizontal line, the top part and bottom part will show in different orientation.

Enjoy.