Okay, so I'm about to order some "lighter" 3/16" dental bands to try out. These are the ones I currently have installed...and these are the lighter ones I will try installing. My goal is to decrease the additional resistance caused by the current "medium" dental bands.
I'll report here on my findings.
So, I finally ended up swapping these "light" ones, in addition to lubing the sliders and stabilizer wire.
The difference between "light" and "medium" is small to insignificant as far as I can tell. However, if I had to choose, I'd go with the "light" dental bands just in case they do in fact add on less resistance to the 55g switch. I think the "medium" bands may have added additional resistance to the somewhat already heavy 55g switch.
On lubing: I used Krytox 205 lubricant without mixing it with anything (I have 103 as well). This was done with mkawa's advice to use a
thick lube for Topre switches. I lubricated only the sliders and the metal stabilizer wire. The metal pingy sound previously heard from modifier keys is now non-existent. The switches themselves now also feels a bit smoother, but not by much.