Originally Posted by
operator
First ascertain that you have enough spacers. If there's any question, stack another spacer 3mm/5mm will probably be enough.
The other thing to eliminate is the fact that the compression plug part of your compression plug may be pulling up as you tighten the headset cap.
1) Tell us which one it is
2) Use carbon assembly paste inside the steerer to increase friction
3) Use a higher torque on the 'starnut'
I have enough spacers; seems to be at least 3 mm. I can't tell if the plug is pulling up but I'll try to increase the friction inside the steerer. I'm also thinking that perhaps the top cap is contacting the top of the headtube before fully engaging the compression ring/bearing assembly, since the whole thing (stem, spacers, top cap) needs to be able to slide down onto the compression ring & bearing assembly to firm up the connection. BTW, it's a neco headset - no frills, standard 1 1/8".