On a new-ish CX bike (about 1 year old), I frequently need to adjust/tighten the headset bearings (semi-integrated ahead type).
After a few rides, they become loose which is noticeable by a "shuddering" feeling when using the front disk brake. Additionally, there is noticeable play in the bearings when I pull the brakes and move the bike back and forward.
What can cause the headset to become loose that quickly? What can I do about it? I already tightened all screws on the stem to spec (the label says "all max 8Nm") after tightening the adjustment screw, is there anything else I can try without specialized tools or replacing the headset?