The indentations that occur across the t-bar sections of the suspension, fill them with hot glue to damp them down. You have a point there, about the "periferie" clamp. As far as balancing the platter I just used a weighted amount for each pie-shaped section and then checked with a bubble level. Not so sophisticated and I probably would not do that on my Linn but It seemed o'kay so far; time will tell. Ortofon makes nice sounding carts. Wish I had the means for a nice SPU with the Tonearm and their step-up. 5k$ sounds fair for a phono needle; eh?