I got a RCBS 5-0-5 scale and I wasn't very satisfied with it:

1) First of all the scale body is so light (aluminum made) that you have to be very careful each time you lift the pan, set it back or move the poises. Each time you perform one of the actions above you risk to move the whole scale and loose the zero.

2) When you remove the pan, set it back or move the poises the beam tend to rotate or move in the front-back direction. If you are not careful the beam will slide and the pivots will go against the sides (front or back) of the bearings; this can affect accuracy.

3) The beam hasn't any damping system (I mean not at the zero but up/down) so if you remove the pan, set it back or move the poises the beam will hit (up or down) against the scale body and bounce. This will also affect zero and accuracy.

4) The levelling foot is poorly made and its screw has some play in the nutscrew.

I took a plexiglas sheet and cut 2 caps from it. I used some glue to fix them to the scale body and filled the space between the caps of lead shoots (about 3lbs).
The upper cap is used to avoid that shots could enter the space between the magnets of the zero damping system.

I took one earmuff and put it on the scale body right under the left end of the beam. It makes a perfect damping system for the beam so you don't have the beam hitting against the scale body every time you remove the pot.

Finally I used some teflon tape to reduce the levelling foot screw play.

Good Job! I'm going to use the ear plug idea on my 10-10

quote:

The beam hasn't any damping system (I mean not at the zero but up/down) so if you remove the pan, set it back or move the poises the beam will hit (up or down) against the scale body and bounce. This will also affect zero and accuracy.

Technically, the damping system (yes, it has one, look at the copper plate) is useful only for small motions near zero. What you have installed is a soft bumper to limit extreme travel.
I think the soft bumper is a very good idea.