I'm also thinking of going for a rebuild of my Dynavector Karat Ruby.
It's the only cart I have that sounds good with my tweaked RB250....

David

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BTW: extract below from the Cartridge Man's website:

"The Cartridge Man specialises in the repair of all types of phono
cartridges - moving coil, moving magnet and moving iron (variable
reluctance) designs. We normally rebuild to the original design and
guarantee performance at least the equal of the original. All work is
hand-calibrated and guaranteed for one year. A rebuild will typically
comprise stylus replacement and overhaul/replacement of cantilever,
suspension and coils as necessary. Note that stylus material is that of
the original (aluminium, duralumin, boron or sapphire) fitted with a
diamond stylus of correct profile. Customer-requested alternatives may
be fitted if appropriate.
Typical costs range from £75 for a moving magnet to £275+ for a moving
coil depending on the work required. "