Overlay preventing clickable markers

[ianh]

My map has been working fine for several weeks. I came back from a trip today to find that my radius overlay is now preventing users from clicking on my map markers. This has been working as of last week. I was hoping I could get some advice. My map is  map.sorghumcheckoff.com

Click search then click on the small red dots to get driving directions. I know that it works cause if you use the default location and search it there is a marker on the edge of the radius that is clickable.