Anyway they seem to unscrew allowing the other one to screw in further.
Definately Azimuth adjusters. Check the top of your tripod. There will be a spike sticking up from the top of the tripod. It will be near the leg marked N or S. This spike has to go between the two threaded rods of the Azimuth adjuster.
Take the mount head off the tripod. Unscrew both knobs a half dozen turns or so each and then place the mount head back on the tripod with the spike between the two loosened adjusters (have a look under the mount and see where the adjuster bolts come through the body of the mount before you put it on the tripod). Do up the tripod bolt to attach the mount head to the tripod. Don't over tighten. Now screw in one of the adjusters. Once you make contact with the spike the head will start to turn on the top of the tripod.
Once you have polar aligned your mount you can then tighten up the tripod bolt more firmly but it doesn't need to be muscleman tight.