The Planar 9 is a great table. You might try getting the current arm and make sure the cartridge is installed correctly. I have a planar 25 (which is a step below yours) in a 40K system and I love it.
Also, maybe you don't like the grado sound, try something like a Lyra Lydian ...
Also, maybe you don't like the grado sound, try something like a Lyra Lydian ...