What kind of system does it use to hold the nut in the steerer tube? i.e., compression plug, glued in sleeeve, starnut?

I've had an issue with a headset loosening when the glued in sleeve in the steere tube came loose, making it impossible to prpoerly tighten the headset.

So, its worth checking that the compression bolt, or sleeve in the steerer is not slipping.


As for getting the headset properly adjusted, it's pretty easy to get the tension right. Loosen the stem bolts. Tighten the top cap until it's snug.
Pick up the front wheel and turn the handlebars. If they bind it's too tight. Then put the front wheel back down, lock the front brake, and roll the bike forward. If there is paly, or a clunk, when the rear wheel comes off the ground. It's too loose. Adjus the top cap accordingly.

When you've got the tension correct, tighten the stem bolt to the specified torque, usually 4-6nm.