who knows ZYX retipping or refurbish ?

@ nandric
How your retyped airy 3sound comparing to the original.
Thanks

gilles130, I got the original as present but defective. The suspension has hardend. So I posted the cart to my friend Axel who added new    (boron) cantilever and his best (Shibata) stylus. However he was willing to cut the cantilever cover and drill a hole in the body to reach  the involved parts. The problem by ZYX is the ''glued together'' body   so the only way to get ''inside''  is to cut or/and drill the body. Axel,     alas, retired while I have no idea if other retiper would be willing to     do such ''drastic job''. BTW this explains chakster statement that        ZYX does '(cart) exchange but not ''refurbishing''. The sound of my     retiped or refurbished ZYX is excelent in contradistinction to its
looks (grin).  

Thanks for your answer.

The ''old economist'' wrote about production and distribution of            wealth among (social) classes. This distribution in our case is
between manufacturer,  importers and dealers. If I am well     informed each get about 30% .So if chakster is right that ZYX
get  60% of the  retail value by exchange of the old for the new     cart  why should they   then mess with refurbishing ? 

Yes, 60% or even more, but only if you send them back broken cartridge with valid serial number. I actually sent my broken Premium 4D, but then i gave up on ZYX. I believe each distributor can do more or less to help their customers. I'm pretty sure it's very difficult to sell such expensive cartridges.