What is the recommendation for pivot screws these days? In the past I've always just used a dab of grease which has worked well enough, but does require somewhat regular adjustment. Thinking about switching to a thread compound and currently looking at a purple locker such as permatex low strength purple or using this Vibra-Tite VC-3. Is either clearly superior to the other? There is also this Saf-T brand of thread locker but I've never seen that in my area.