I didn't learn the caulk trick here. I learned it before I found OGRF, near a decade ago from the old ho crowd at Bachmann. But I've used it for so many many other things I knew what it entailed immediately. ( I painted for a few years, and a pal that lives here does nothing but caulk). I laid only one small N scale loop for a pal, then I lost track of him, so no real way to know how well it is still holding up; but some tile cracks done with the leftover are still ok 
You CAN pull an overkill (don't).. Small beads laid so when the track is set, its roadbed makes contact and slightly squishes it when pushwd on, but not so much excess oozes out (but it IS pretty easy to clean up...or paint.(if it doesnt say "paintable" it likely isnt). Try 4 or 6 short beads vs the whole track. It will hold well and can be reset more easily if removed as there will be gaps for fresh caulk and no need to remove all the old caulk. It will likely insure proper placement again too.
Holding strength varies, but even cheap caulk is actually pretty stong in general. If you have never removed caulk before, I would try to caulk a piece to a box, then when dry, remove it with a putty knife or four way knife just to see what to expect (old caulk will be a little harder too)
