[mbarryracing]

Here is a diagram to show what you'll be looking at to do that lightened weight mod. Shows what you'll see after pulling the left side cover off the engine to expose the clutches...

You'll need some type of a jewelry scale, postage scale, etc that reads in 10ths of grams in order to weigh the rollers and see which version you have.
The most common is the 18Gram roller weight, but there have been some 24 gram versions which obviously will require a different grind weight than the 18.

If you do have the common 18 gram rollers, then lighten each by 5 grams to make them all 13 grams each to work in conjunction with stock springs in the rear driven clutch. It's really not that complicated if you take your time.

I got my complete clutch kit from Full Power Performance, their kit already comes with special rollers to match their new rear clutch springs so you wouldn't have to worry about modifying your stock rollers. This will require taking apart your rear driven clutch to install those springs, or if you don't have the needed tools you can always send them your rear driven clutch and they will disassemble and install the springs for you...