A good friend of mine had a couple of those things. They are very nice bikes. But by my standards they're a big ol barge. How my friend did what he did on curvy roads and Putnam, on that big old thing, I'll never know. I told him a hundred times that I was glad he wasn't on a 600, I'd have never been able to keep up.
Sounds like your FZ has had some Suspention work. That's good. They need it. Throw on a can, and rejet those carbs, and it will run better, a lot better.
Sounds like your bike has been on a track, or at least the tires have.....
But honestly, that's a 15 year old bike. Have you ridden anything new lately?