Drush make files and Status URL - do I need to add machine name and major version when using?

I am trying to understand how to use my own FServer to provide updates for my modules and also allow me to use Make files.

Therefore, I am using the paths provided by the module...
- For drush make makefiles: projects[d6_test][location] = http://d6/fserver
- For d6_test.info: project status url = http://d6/fserv

However - these don't work. In looking at the Update View, the path is fserver/%/% - and I can see that the XML feed is looking for the machine name and major version.

I certainly can add this to my make files manually - if thats the proper way. But this leads to two questions...

1) What is the proper URL/Path that I should put in my make file? Is it (a) http://d6/fserver or (b) http://d6/fserver/machine_name/6.x?

2) If the answer is (a) - am I doing something wrong that Update cannot find the file? or (b) Can we change the Fserver module to provide the specific path instead of simply the root path?

Thanks in advance for any feedback. I'm comparing the 6 and 7 branched of Fserver and trying to see if D6 has functionality that d7 does not - and I want to deploy this for my team - and the specific URL is preferable since it would be a simple cut and paste.