My DC hasn't been cutting too nice this year. I just put on a new set of Gator blades today, lubed my deck up, made some adjustments, and it still isn't cutting like it used to. Off the left side of my deck, it seems to miss a narrow strip sometimes. When I trim around trees, wherever my deck wheels run, it doesn't pick the grass up high enough to cut it. And last, my striping doesn't look near as nice as it used to. My rear tire tracks are always darker and you can tell where each blade cut (I have 3 small stripes per pass instead of one 60" stripe). Any ideas what could be the problem? Does it matter which way blades are oriented when you put them on (not which side faces up, but how they are placed side by side)? Also, I have 2000 hours on the machine - is it possible the motor may be getting week and not providing me with the power I need to maintain the proper blade tip speeds?