There are a couple of inexpensive ways to dampen your tone arm that are easily reversable. One is to wrap the arm tube with plumbers teflon tape. Simply wrap the entire arm, or alternately, two or three spots with multiple layers of the tape. Another is to purchase some shrink tubes from Radio Shack. These are 4" long plastic tubes that can be slipped over the arm tube and shrunk snugly onto the armtube by gently heating them with a hair dryer. Either of these techniques will have a dampening effect and you can decide whether or not you like them. If not, simply remove them and you'll only be out a few dollars, at most.
Finally, Herbies Audio has HAL-O JR dampers that might work as well and if you don't like them just return them for a refund: http://herbiesaudiolab.home.att.net/jr.htm
Finally, Herbies Audio has HAL-O JR dampers that might work as well and if you don't like them just return them for a refund: http://herbiesaudiolab.home.att.net/jr.htm