I've used a Trac-Vac unit on a Toro walkbehind and had Gator blades on the 44" deck. I think you pack more into the can because it's shredded. I'm now using same unit on a Wright Stander and experimenting with double blades. So far the cut is great and on some lawns I just shred leaves and don't bag. I use Gator blades all year. So, maybe I'm saying use both blades? Worth a try.