Coltrane,
The Shure stylus replacement is worth a try. After that there are a lot of cartridges in the $150-200 range. Each will bring different attributes forward. Some image better than the others, some have a smoother, extended high end, some have strong bass... you get the picture.
Tell the board what is most important and we will have suggestions.
I would try the Shure stylus and if the generator is bad (not very likely) you can sell it for minimal loss.