Has the performance dropped off or is not repeatable?
If you've kept up proper maintenance on them, they'll last a long time. Springs are cheap and good insurance. If the discs are kept clean and glaze free, I wouldn't replace them. You can easily see the wear pattern in them and they typically get better as they seat with some run time.
I'd be glad to freshen your clutch for you, but realistically, you should be able to do this work yourself and save a few dollars.
Being that we are also located in central Indiana, just let me know if I can help.
Thanks. I really haven't noticed a drop in performance and I clean it really good after a night of racing. I was just wondering about the springs etc. I will not worry about it then. Just do my routine maintenance.