Hi there! I am about to move my studio to another place, and I found an old power amp (Alesis R-100) that it has this problem, I wonder if I can fix it: The right volume knob, when you turn all the way down, it continues to let sound out, if I turn to other position he gets a lot of variations on the volume level. As you can see, this makes impossible to stay on a specific volume level exactly as the left channel. Is this a easy thing to solve? And can I fix it or should I get technician help? This amp has been for several years (2-3), in the original cardbox, but with no use. If this problem becomes expensive to fix it, I just might give it away and get another one! Any help or repair link would be great! Thanks!