52" Ferris Chute Side Blade... Not Cutting as well ? Ideas

ok, I have a 2010 Ferris Hydro with a 19 KAW ,,,, Great mower. We use this mower 50 % of the time. I have noticed that the Chute side blade just does cut as well as the other 2 ? Tire pressure is the same ? I have never had to ever replace the large belt on it ?

Its better if i crawl it ... but at a decent speed people like us can tell.


any ideas ?


Thank You