I have a 1999 60" Lazer Z with 25H Kohler. I bought the unit used and have been fixing alot of little things but overall mower is in O.K. condition. While I was cleaning deck today i noticed that the discharge side blade was about a half inch higher than the other two. Spindles seem tight and nothing is loose, I swapped the blades around thinking one was bent but that didnt make a difference. Any Ideas on where to start? This isnt normal is it?