Well Tempered Tonearm Problem

Acquired a WT Classic recently from a friend who needed money...hence, the condition issue. There is a problem (few problems?) although it seems to play OK. The paddle shaft/ring is not centered in the circular reservoir...this seems to cause the arm to drift as if there is too much anti-skate correction (at least I believe it is the cause of the drift)...the anti-skate thumbwheel is maxed out so adjusting is not possible. If I pull up on the one fishing line (right-hand one if facing the table) to center the paddle, the azimuth is off at the cartridge...and then if I adjust the azimuth to correct that, there is way too much resistance in the up/down movement of the arm. I am thinking that somehow there is too much line on the side I am pulling on and that I should wrap the line 1 or 2 more turns around the azimuth adjustment knob (the manual is silent on these types of adjustments except for adjusting azimuth via the knob). I'm uncertain how to even give that a try as I'm not certain how the knob comes free (I've pulled on it gently to know avail but I think it is a friction fit and not threaded). I'm basically clueless so any assistance, a manual, a new direction to continue in or another contact would be incredibly appreciated. Many thanks.