Hi Pgeorgyev. I've had my Forsell for over 12 years now and have been tweaking on it since the day it arrived in my system. I am glad that you opted to keep it since it is one of the finest turntables built in the planet. Although it is true that the tonearm is a lightweight, I have learned a simple technique to increase the tonearm mass and allow it to work well with several other carts of medium and even low compliance. The trick is to add more weight to the arm (that part where you can adjust the vertical tracking force) and gradually bring the weights either FARTHER or CLOSER to the pivot point (the part where the arm is held by the air tube). What this does is increase or decrease the tonearm mass to match a variety of carts. Do it one weight at a time and find the best weight that sounds best. I use little aluminium washers, each weighing about half a gram, to increase the weight. When you set the VTF, because of the added weight, you will have to set the weight at a different point in the tube. Keep experimenting and you will find a set of weights that will do just fine for a paricular cart. Hope this helps.