I have razorback temp the whole sandblaster setup and blowhole with stm clutches fully aligned. Just deep snow works them so hard. The cover is so close to the clutches even with the stm spacers. Wanting something aftermarket with more space for air flow hopefullyThe cover is critical to the cooling of the belt. You can buy a kit that has a new cover, belt and intake tube that is an update depending on year etc. Install a belt temp gauge to know how hard you are working the belt. It will save you much grief.