OK...so I was cutting and hit a rock. The mower kept running and it sounded like the blade just kept destroying the rock. I knew I needed to replace the motion drive belt and that m blades needed replacing so i got the belt and blades. First thing i noticed when going to replace is that i usually put it in gear or set the parking brake. Well neither keep the rear wheels from moving. I decided to change the blades this AM. I bought a 2nd set of new blades as on hand replacements ready to go. What was different this time when replacing is that both pulleys moved with the movement of the ratchet. If this is normal that's fine its just that it did not do this last time. Also upon further review the blade on the grass ejection side is going to rub a little. I never even got to replacing the motion drive belt. I was so pissed off. Any help is appreciated.