Upgrading a Scout II, Best bang for the buck??

Hi all

I have this TT for a couple of months now and was wondering what I could do to improve it. This is my first TT in many years so I don't have much experience with TT's and I really don't have anything to compare it too.

A little bit about my rig, I am using a NOS Shure V15 XMR, a phonomena II phono stage, a Linkwitz Orion 3 speaker system and matching Thor subs.

I have aligned the cart with a Mint protractor and its sounds very good as compared to my Sony XA5400ES cd player.

I was thinking maybe a VPI ring and center weight, possibly a better stand and maybe a 2" thick peice of granite to place the scout on.

Any help would be greatly appreciated

Thanks
Frank