Do Tonearms need servicing

I really love tonearms even vintage ones, small micromechanical objects and I collect them; all the arms I buy in the world I send them to a trusted micro mechanics laboratory to have them overhauled.
The vintage tonearms bought used must always be revised if you want to keep them in perfect efficiency as new; bearings with hardened and out of tolerance grease and a lot of dirt stuck to it ... hardened and dried out connecting cables, lifter not work or without siliconic grease and other problems that are not noticed take functionality away from the initial design and the cartridge will never track to the best of its ability.
Around $ 150 should always be budgeted for an overhaul when buying a used vintage arm as they are delicate mechanics like watches, the tonearms at least once they must be serviced after purchase used, this is a guarantee of perfect functioning for many years to come. 

  but you must buy a perfect sample from an audiophiles, not a hardly used broken or damaged items.

shopping in the world if you do not buy NOS you cannot know how it was used by the previous owners who can also indicate that everything is fine and, then arrived home everything ok is not at all, the fault of the seller or the transporter, or different owners clumsy.
I don't have the luck or even the money to buy NOS arms, so when I get them I send them to a trusted laboratory that revises or repairs them for me; if there is no need to do anything because it's perfect I don't pay for the service.
I am happy and the situation is fine with me.

As for this thread, this type of information supply is moving away from the OP's initial inquiry.

we ask for opinions on fruit and we end up discussing sowing.  LOL

In other side, if you don’t like what you read in any thread well just don’t read it

at all, I find it all very funny.