I agree with Blue Shadow --
If the wire tests ok, (test continuity for all leads etc), I would certainly not take on the task of a rewire... It can be an intense
demanding job depending on the arm.
As far as cart choice....
Now it comes down to system synergy, as well as table/arm mating.
Then comes the real test-- "This sounds AWESOME" -- or.....
The Grado will be warmer than the Shure, with Shure maybe a bit more detail, probly a great tracker.
In the past it's a known thing that Grado can hum with
certain tables.
There is a list of tables somewhere on the internet that, (don't recall) it either lists the known brands that are, or aren't compatible.
Myself I would lean toward the Grado, but thats just a personal thing. I have a linear tracker that will get a cheaper Grado if it ever gets completed,
I so lust after one of the midline Wood Bodied Grados ... I think Grado has an ugrade path as well. <---
Best of luck!
Being able to listen counts; too bad the days when one could take an LP into an audio store and audition equipment--- lonnng ago.
I remember as a kid, I would always take my Pink Floyd DSOTM lp and go to the stores to audition.
All this talk about arms and I just realized thats one mean table; that Kenwood! Investing time with that table/arm should be one treat!
Loook forward to hearing of your progress...