I reposition some of the plate screws and tuning pin holes. New pinblock and bridge caps of course.
The soft core tenor wounds allow for a smoother break because they create less of a jump up in total unison mass.
I’d be interested to hear what your wound trichord sounds like on the F# (22).
I played a Cunningham Matchless 7’ and thought it was an excellent piano, better than a Yamaha 7’. The scaling in the tenor/bass range I think would be considered better by some of you on the forum. I’d say the tenor notes didn’t have that lower tension sound (best way I can describe it) found on the M&H BB or the Steinway B. But for me as a pianist I actually like the sound of plain wire in the tenor range (within reason). It feels richer. I may like to do something about the F# on my BB but that’s about it.