We had trouble with the updated filter plugging after only a few hours of combining. As soon as the filter plugged, the cab would get dirtier because it would suck air and dirt in through other places. Our solution was to put new latches and some weatherstripping on the right hand cover where you access the concave eyebolts. Now our filter doesn't plug, and the cab stays cleaner. If you're filter isn't plugging up, I guess this isn't the answer you need. One place to check is where the throttle_hydro cables go through the rear of the cab.