Does anyone have any idea why the wet brakes on my 2520 make a loud high pitch squeal? Both sides will do it and it seems to go away if I ride the brakes lightly for 10-20ft. It will come right back after a few minutes though. I changed the transmission fluid/filter at 50 hrs with hygard low vis fluid and the tractor now has 90 hours and is a year and half old. I don't really know if this is something new or if it has always done this since I don't use the individual brakes that much. Does anyone know if this is normal or what could be causing this? I found some other posts where this happened to people by using aftermarket or the wrong fluid, but I used JD fluid from the dealer.