The standard blade shipped with TURBO FORCE decks is a high lift blade. It is the highest lift “sail” blade that Toro offers. As you know, the 40” uses a three blade design and as such it has incredible vacuum that contributes to a very clean cut. Some customers have indicated that switching to the medium sail blade reduces the vacuum and results in less grass accumulating on the underside of the deck, without sacrificing quality of cut. Results can very by region of the country, type of turf mowed and time of year, but it may be worth a try.
-The Toro Company