Amateur and suspension should not even be in the same sentence. Seek professional help. Years ago I shipped the front forks to Dan Kyle/ LDH. I then bought an Ohlins rear shock from him. That 929 is still the best riding motorcycle Iíve ever owned; my used Ducati 858 Streetfighter is a very close second. Bite your tongue, hold your breath, look the other way. Do whatever. Youíll be glad you went first class.
As bad as it reflects on me to say this, I think it needs to be said. Before last week, I rode a bike that had a 10 and 12 year old tires on it. I really have no excuse for this, but it's true that it happened. Riding on the new tires pointed out just how bad the prior tires were.
I still have a clicking noise when I hit a 1/2" bump going into a parking lot and still don't know how to adjust the suspension that I have. Given that, the bike is a completely different bike in terms of ride quality, lean smoothness, accuracy, no longer dancing all over, etc...
I have no doubt that the bike can be improved even more with a professionally reworked suspension, at the same time, I got what some might say were "low buck" tires. I could have spent some 3X on the tires and I can't even say if it would make a difference to me.
Just getting an understanding of how to properly adjust the suspension would be a great start. Maybe as much as the new tires made, IDK.
I think the analogy of a race car on the street vs a great handling car on the street. A bone stock 911 Porsche vs a million dollar race car is no compare, but for me, getting a bone stock 911 Porsche to work properly with proper tires, braking, etc... would be a great step forward.
So many have said the stock rear shock is bad that I have little doubt that it is bad. Similar with the forks and enough knowledge to get the setting more in line with my use and skills.
I haven't made my mind up on what path to take.
I didn't know jack about making cars handle, read a book, made the changes and it worked. I'll probably do the same with the bike.