What with or about irreparable cartridge?

I was very excited and glad when I (at last) got the
Sony XL 88 D (D=diamond cantilever/stylus combo).
Alas the cantilever changed somehow its position such that
the stylus was not straight. Knowing how 'easy' the cantilever
can be removed and consequently turned around
I posted my cart to Axel Schurholz. He informed me that this
cart is irreparable because the (plastic) body is glued together .
Recently the same problem occurred with the much
praised ZYX. This cart has also plastic body glued together
without any entrance possibility. The suspension was defective and
no way to get there for the repair.