Ok, brains in gear again and no more clutch slip, or for Charlie the hydro fluid is topped off. Is there a down side to the driveshaft 'upgardes' that can be done to the cubs. I realize that it would help cut-down on role-pin shearing, but can it hurt the drivetrain? I have though about this many times and can't help but wonder. I'll gladly replace the pins so often if there is a downside to the upgrades.