I'm having trouble with a couple of my accounts in regard to the quality of the cut. I'm running a Gravely 252Z and a Grasshopper 928D 61", both with factory mulch kits installed. I keep my blades sharp, but it seems that since the grass is growing so dang fast right now, I'm just leaving too many clippings behind on a few lawns where the turf is really thick grass. One of my lawns in particular seems to give me fits with the grass "matting" up and then causing yellowed grass because the "mats" don't decompose and let any sunlight in. I'm cutting no shorter than 3", and I usually go 3.5". Up in my area, we have mainly bluegrass and fescue for most turfgrass areas. This is long, but basically my biggest problem is too many clippings, even though the clippings are chopped up finely. I've gone to 5 day rotations because we're having unusually hot weather with some actual moisture go with it! Even at 5 day rotations, I'm still having problems...can anybody offer suggestions?