How rude.
Bobc,
There are aspects of this that are beyond my realm of experience with these specific products. That's why I didn't elaborate. I'm told that the 103 family (w/5 cu @ 100Hz) sounds best on arms of around 20 to 25g eff mass, but the question arises about the unipivot. I would guess that conventional gimbaled bearings are preferred, but that's a guess.
Usually, much higher cu carts are recommended for the Classic arm(s). Maybe the Classic 3 arm is heavier with stainless arm tube?
Your question seems appropriate to me. If someone had experience with this specific combination it could be enlightening. I see no search function on this forum and a quick Google search didn't turn up any relevant answers.
Good luck.
Regards,