Darryl is right, another thing that you might check out (I not know witch mower you are talking about). Look at the blade that is on there now. Some smaller high end/commercial units are nothing more than a larger motor with a special high lift blade configuration. So the blade you have may be doing all it can to improve the cut for the mulching/bagging/shoot set up. Gators can be found with some wavy extra lift. And then you might be ok with the gator teeth chopping up the grass and leaves better. But in some cases the gator is just not suited for a deck that is desired for a unique blade design. I have seen this a few time with other guys that just hate gators, but when you look into what it replace. Many times the deck and the original blade are about the only thing that works well. This could well be your situation..
Good luck do some exploration before you spend the money to fine we gave you dad advice.