When i hit the blades on my Scag SWZ, it rumbles at first and then after like 5 seconds the blades finally engage. I checked out the belt running from the engine to the blades and it shakes alot so should I just tighten it or something. This sound is really starting to annoy me and I can't figure out what it is. Another thing is still my Scag seems to just bend the grass over and not actually cut it. I tryed what you guys told me but that didn't help me much. Also when I cut, there are 2 lines of like grass that has just been burnt out down the center like where a dual wheel sulky wheels would follow. The stripes are nice but those 2 lines are killing me and the bend grass, well we won't discuss that problem Anyway any thoughts would be helpful.