Aftermarket blades are available but are a similar design to the original. What height are you cutting? Are your blades properly sharpened? Is the underside of the deck clogged with matted grass? Is the engine not running at the proper speed?

Honda has a selection of blades for the mower. I'm assuming Micro-Cut is the same as 'Quadra-Cut' and it's a dual-blade 21" push mower. If you're mulching at a height of over 3", uncut grass blades are not uncommon. The mower blades are always pushing air, and with no place to escape but the edges of the deck, the tendency is for the air to push the grass down rather than pulling it up to be cut as when bagging or discharging. The higher the deck above the ground, the more likely it is that this will happen.

Thanks for the responses. The blades were 1st used factory sharp, then profesionally sharpened razor sharp. The deck is hosed out every mowing. The mechanic at the dealer I bought it from promised he tached the engine to the correct RPM before I left with it. I'm thinking either blade design, or deck shape may be the main contributor. I am currently mowing right at 3". I have found that with grass that has now quit growing so fast (since the rain has let up) that it does much better than with over grown grass. There is one thing that baffles me about the taller grass. This is Honda's commercial mower, and while the grass often got to be 7-8" tall in a week's time, it would leave single blades of grass standing here & there, but it never left clumps of grass behind. The Micro-Cut blades are different from Quadra-Cut. Actually, the upper blades are virtually the same on both sets (no lift,) but the Micro-Cut's bottom blade has a much wider, and over all larger lift area on the outer end - almost paddle like. It looks very impressive, but now I wonder if it may be creating too much turbulence underneath. A Honda rep did tell me this is a high-vac deck/blade system, and the best cutting takes place at lower settings. The problem I have with that is one of the reasons I bought this mower was because it can be set as high as 4". I am in Florida, and mow St. Augustine grass which does better health wise being cut to around 3 1/2 - 4" in the heat of summer. Three inches when its hot, leaves it susceptible to burning & lawn disease.