I have around a 2005 48 inch turf tracer with cutting problems. Cut looks stringy looking on first pass. Leaves blades of grass uncut in random places, no pattern. Not streaking. Cuts level. I have taken it to our local mechanic which all the local pros use but is not an Exmark dealer. My local Exmark dealer referred him and said that the worked on all their mowers. I live in a small town so our Exmark dealer is a very small shop mainly sells atvs. The mechanic found that the drive belt for the deck was worn and replaced it but said everything looked good and he didn't know what was causing the problem. I have sharpened my old blades, put on new blades, cleaned under the deck, put weights on the front, and even tried doubling the blades. nothing has helped. The deck is not warped and the baffling looks good. I bought the mower used before mowing season this year. I mowed great for the first 2 or 3 weeks then it started leaving all my yards stringy looking. I have to double cut everything with it. Anybody got any ideas on what the problem might be.