Is it more effective to address a creaky headset on a mountain bike by tightening the stem and headset bolts in a specific sequence, or by applying a generous amount of grease to the bearings and then reassembling the headset, as some mechanics swear by the latter approach despite the potential risk of over-lubrication? Some argue that the former method provides a more precise and controlled solution, while others claim that the latter approach allows for a more thorough and long-lasting fix. What are the potential consequences of using each method, and which one would be recommended for a high-performance mountain bike that is subjected to frequent and intense use? Are there any additional steps or considerations that cyclists should be aware of when attempting to fix a creaky headset?