Everything is working wonderfully now. Thank you so much.
All markers are on the map now. It appears that every listing I did AFTER that WARP one were the ones missing. So fixing that one listing, solved that whole problem.
There was another issue of the map not working on the Central Places category (/courses/category/central), when all of the rest of the categories worked fine. The WARP course was in that category, so that’s what was causing that problem. Just so you know that is also related. That is now fixed.
All that from an odd character in the latitude! I will certainly be more careful about pasting those in. Thank you again for all your help.