So at the LBS, I took a free bike maintenance class where they went over the basics. They suggested two different kinds of lube to use - white lightning, which is the wax-based kind that is not water-resistant and tri-flow, which is water-resistant. I remember the guy saying you could use one on top of the other, but not the way around. And I think he said you leave on the white lighting but wipe off the tri-flow. Similarly, is it fine to just use one of them? I'd assume it'd be better to use the tri-flow since it's the most protective. Thoughts?