"Assume new scales today (RCBS) have dampening? That would sure be nice."
If by "new" you mean everything made since the mid-60s, yeah, they all have magnetic vane dampening.
You can use most light vegetable oils in the "pot" the paddle sticks into, many of the old guys liked olive oil or peanut oil, IIRC. The oil has to be replaced from time to time, dust will settle in it and change the "viscosity!" Simply covering the scale with a hanky during storage helps a LOT.
You may already recognise it but I'll say this anyway; the most important piece of "reloading gear" you can have is a properly laid out and strong bench. Make a strudy box or shelf that will place your good old Redding scale near eye level where you will be using it. (The only worse place for a beam scale than flat on the bench top is
under the bench top!)
Mount your powder measure behind and just to the left (for a right hander of your press and have the scale/powder trickler just to the left of the measure; that will allow you to have a good work flow and allows for bullets and loading blocks to be placed between the scale and bench front edge, immediately to the left of the press. Properly placed tools will allow you to size, powder charge and seat bullets without even moving your feet. That's much faster than the arragements I see in most "Let me show you mine" photos!
If people set up their benches more thoughtfully, with powder measures and scales properly located, they wouldn't think their beam scales are "too slow" and spring big bucks for flaky digitals that will do okay on the bench top.
Have fun!
Oh yeah, ref "leveling" the scale body; it isn't necessary. The beam's right end nuts takes care of leveling it and it's NOT critical the beam be perfectly level to the horizion, close is good enough. The beam will balance properly when the poise weights equal the charge weight, it couldn't care less what angle the body is but the pointer scale matters of course. Thus, we must adjust the body for "zero" with the screw foot when the beam IS properly in balance.