Could Not Connect to Security Token Service Application

Receiving the following:

Get-SPSite : Could not connect to http://localhost:32843/SecurityTokenServiceApplication/securitytoken.svc. TCP error code 10061: No connection could be made

I have validated the site and app pool exist and are running... however, browsing to the url returns a 404 page. This is happening on 2/4 servers in my farm. 

I have removed SharePoint and Web Server/Application Server Role from each server and re-installed SP to no avail... next step is re-image but thought I would check the blog-o-sphere first...

- Rick