How much smoke can you make with a brush hog clutch before it needs to be replaced/serviced? Cuttin' big stuff while distracted by need for vigilance to not roll over or go end over end in irregular terrain and kinda strained things. Since brush hog is pretty HD, rated for 40-75 HP, and I can only produce 39.5 at PTO (but I generally run it a little slower than standard speed (around 450-475 instead of 540) , I thought the unit would be bullet proof (if not idiot proof). To top off the day I put a hole in my nearly new Firestone rear tire but that is another story/thread.