I have 2 01' ZR600 carbs running two different set-ups in each. On the one sled I am running a Goodwin clutch kit, Carbon Tech reeds, reed block spacers, and a D & D Power Breather. On the other sled I am properly jeted down, and a cluth set-up from Fett Brothers. With the low snow conditions I still need to do some fine tuning, but both run strong.