Dear @vinny55 : Jelco is better tonearm that many of us could imagine and is a well damped design and you can get some kind of warranty if something is wrong with. Warranty that you have not with that vintage tonearm that additional is not a well damped design an vintage internal wiring where the Jelco is a " fresh " one about.
Could be that @noromance is right.
R.
Could be that @noromance is right.
R.