Iknow this might be a little more on the expensive side, but how about a fully adjustable driven clutch? You know be able to swap springs, helix angels and so forth...just like the sled guys. My pilot has the porting, pipe, and clutch, and I keep searching for traction now. Although it has made a big differnce to be able to spin the tires and power slide a corner(rally style driving) I need more traction on the whole shot and out of corners. I just keep spining the tires. Your idea lude is good, and cheaper then my ideas of having another spring made. I had found a company a while back that would make the springs but we would need a min. order of 20, and I didnt think people would be to interested. Im going to try adding a pre-load though, whith all the mud, hill climbs,and stuff I do..I need and LOVE torque..
PD