erisch,
Yes, the Denon DL-110 required about 2mm or so of a raising to make tonearm parallel to the record. I attained 9 small flat washers and super glued them into 3 stacks, 3 high which give a 2mm or so height. I then drew up the 3 points of screws holding the RB-330 down and slipped these stacks of washers under the base and then screwed the arm back down. It works great and keeps things rigid, hardly noticeable too as the flat flat washers are silver and the brace on the P3 is silver too.