Servo problems...

Yes, the output on the serial monitor corresponds to the movement. This is what I get in the serial monitor throughout about 30 seconds.. in that time, the servo moves about once a second.

LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=206 SENTENCES=1 CSUM ERR=0
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=548 SENTENCES=3 CSUM ERR=0
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=963 SENTENCES=5 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=1235 SENTENCES=7 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=1507 SENTENCES=9 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=1779 SENTENCES=11 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=2172 SENTENCES=12 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=2499 SENTENCES=15 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=2771 SENTENCES=17 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=3043 SENTENCES=19 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=3315 SENTENCES=21 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=3763 SENTENCES=23 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=4035 SENTENCES=25 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=4307 SENTENCES=27 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=4579 SENTENCES=29 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=4851 SENTENCES=31 CSUM ERR=1
LAT=42.241939 LON=-83.009277 SAT=6 PREC=190 distance is greater 60.00 course is case 2 39.00 CHARS=5299 SENTENCES=33 CSUM ERR=1

thanks for your help