Stems can creep up the steerer. Tightening the top cap after the stem can possibly help holding the stem down while not putting more preload in the bearings.
Maybe I should've been doing up the top cap more often on the Kinesis 4SD. It's headset would often loosen off until I installed a supersized knurled bung instead of their shitty one.
Stems can creep up the steerer. Tightening the top cap after the stem can possibly help holding the stem down while not putting more preload in the bearings.