I just had my first pull with the Xzillerator. The clutch will slip in 6th. when I really get into it. Like you I am wondering what's next. I am disappointed as it sure felt good when the little six banger was putting out. I tried it once more and there was slippage again so I set it back to "2" and left it there. I have lots of power on this setting and pretty well max out egt's any way. The clutch seems to hold in 5th but I had to get out of the throttle a little to keep under the 1350*. I guess I'll need to start saving for a clutch, a set of tires,?????. Damn thing is a money pit but I sure like it.