This is our first year in biz, and I have heard conflicting ways of doing a double cut. First way - cut at a certain height. Then raise the deck 1/4" and cut again, going at right angles to the original cut. Second way - cut at a certain height. Then LOWER deck 1/4" and cut again going at right angles. Any ideas? Also, we are finding we have to cut 2-5 times on some lawns to finally get rid of the clippings. Is this normal? We cut at about 3" Thanks!!