Over the weekend I purchased my first mower. An Exmark 36" Metro. Decided to go with Gator blades at the suggestion of the dealer. As I was about to change them today I noticed that one blade wasn't turning very well. It seemed real tight whereas the other blade would turn with a push. This is my first mower so I don't really know squat about them. I thought maybe the bolt that holds the blade on was just too tight, but after changing the blades and tightening them both with about the same force, it was still really tight. Could it have something to do with the belts? I could take it back to the dealer but I start my first lawns tomorrow. What do you guys think? Suggestions as to what I can look at myself, or back to dealer? Thanks.