[gembud] Strange garp display (10.5.4)

I'm getting some strange results from GARP when plotting a contour over
a color-filled plot.  Anyone have any idea of what the problem might be?

See the links below for what it looks like and the FDF I used.

The FDF: http://www.geocities.com/devin_eyre/Hght_m_gfs003.txt

Garp Screen shot:

Macro selection window:

Devin Eyre
Lead Software Developer/Met. Sys. Admin.
ImpactWeather, Inc.
713 948-6018
Your Weather Department