And I do the exact opposite. (except the stem clamp)
1) BB spindle tapers - to create a seal between aluminum and steel and to insure they go on all the way, just know how much to tighten as to not overtighten.
2) when pressing headset cups - again sometimes it due to aluminum and steel contact and to form a barrier against rust or corrosion.
3) saddle rails - many annoying creaks have been solved this way.
And I do the exact opposite. (except the stem clamp)
1) BB spindle tapers - to create a seal between aluminum and steel and to insure they go on all the way, just know how much to tighten as to not overtighten.
2) when pressing headset cups - again sometimes it due to aluminum and steel contact and to form a barrier against rust or corrosion.
3) saddle rails - many annoying creaks have been solved this way.