Cannot get samba to work properly

I have newly installed RHEL 7.2 Server on an HP ProLiant DL980 server and am having a terrible time getting Samba up and running.

To be more specific, I have smb and nmb services up and running but the sharing process is not working.

It also seems sporadic - sometimes I can see my Windows shares from the Linux machine but other times see nothing. I have at least once been able to connect and move files from Spock (Linux machine) to Kirk (Windows 10) but not it is not there any more. I have never been able to see my Linux shares from the Windows machine no matter what I've tried. I have confirmed that all the machines are in a workgroup called WORKGROUP.

I have disabled SELinux. I may re-enable it at some point, but right now I want to remove it as a possible source for the problems for this and other areas.

I have attached my sbm.conf for your reading pleasure.