Delighted to see that my beloved AT1100 has the right geometry for the armboard installed on my Gyrodec, I do the installation. An immediate problem from this arm that worked perfectly up to now. The arm is being pulled back very strongly without tracking very far on the record. I have lessened the anti-skating force to try and stop this but nothing I do is working, not even setting it to zero. The arm tracks only so far and then sticks because it is being pulled back to the rest position. Broken anti-skating mechanism? On this arm is looks like it is spring operated, not the thread and weight arrangement.