I'm going back and forth with the ever popular question yz or wr. The yz just feels better. This must be why everyone makes there wr feel like a yz. One of my ideas is to get the yz and add a little flywheel weight to help out the "flywheel effect". Forget all that other stuff because the yz has it. How much would this one mod cost me ?? anyone Know? Is this simple or major surgery ? Plus the YZ is 10 lbs ligher.