First, I love my Exmark 52" 23 Kohler. But, after about only 15 hours of mowing, the right park brake shoe started squeaking really loud. It will bug the crap out of you in a short time. I asked the dealer if there was something I could do instead of returning the mower for repairs. He told me that it probably just needed adjusting and to back off the tension a little. I backed it off a little at a time until it stopped squeaking but then it was too loose to hold the mower on that side and the mower twists on the trailer. I tightened it back up just a hair and now it squeaks again. It's almost like the shoe is not round and it rubs on the hub all the time. Is this a common thing and will they replace it under warranty or will I have to pay for it? It has about 50-60 hours on it now.