See, there you go with that long term thinking. As long as it fixes the squeak or sticking thing right now, what else matters?The only problem I have with that is that WD40 is not a lubricant. It actually attracts dirt and will make things worse.
It is good but without a hammer it is hopelessly incomplete. Actually, I recommend hammers of increasing sizes so that molecular excitation can be applied at increasing amplitudes. If molecular excitation fixes the problem, you're good to go, but if it breaks something no problem, because then you know what to replace!
The only problem I have with that is that WD40 is not a lubricant. It actually attracts dirt and will make things worse.
My wife brought home a can of that stuff a few years back, thinking I could use it. It sits on the back of my shelf, behind my LPS1, 2 & 3.