Thanks! this works.
Just to clarify, courses are found under training
connect.garmin.com > Training > Courses
If you have access to Linux, this command will strip out the leading spaces.
while read l; do echo -e "$l"; done <{input_filename} >{output_filename}
Example with filenames:
while read l; do echo -e "$l"; done <23410929.tcx >23410929_fixed.tcx
This worked for me. Thank you!!