I have 2 Snapper walk behinds that I cannot get a good cut out of. I have tried every blade combo I could think of, including doubles. My problem is, I have to double/triple cut every lawn regardless of speed, height or time of year. The decks just don't seem to lift the grass and cut level. There are always uncut strips that need to be gone over. My Toro cuts 200x times better than these units. I am eventually going to switch over to all Toro, but any advice for now would be greatly appreciated.