The V damping fluid is a fairly viscus silicone gel stuff (for lack of a better description). It’s really not a big deal to use/install. I had a syringe of it anyway, so it wasn’t any additional cost for me. The only time it can be a pain is if you spill any, or maybe spill when moving the table/arm. It’s a b1tch to clean up for sure. In terms of preference overall to each their own. It certainly isn’t “required”.
Regarding the clamp on or off the table, I don’t really think it’s a big deal either way. The clamp is fairly heavy and it might change the level a bit but enough to make it an issue? Doubt it. When I set up mine I’m pretty sure the clamp was on, but I honestly don’t remember. I’m not sure where the manual mentioned anything about the clamp relative to the tower adjustment. I might have simply shined it at the time.
