Over the winter I bought my first ztr. It is a Lazer Hp with a 52" trivantage deck with a 23-hp Kohler. Currently it is not cutting as well as I would like and I am thinking of changing the blades. Any recommendation on blades would be appreciated. I live in East Tennessee if it matters what type of grass I am cutting. I am not commercial. I mow only family property (father, mother, aunt and myself). Again, any guidance is appreciated.