Toro Groundsmaster 455D, PTO will not stop running. Wings stop but PTO continues to run. Clutch plate gap is .025plus so is looser then spec calls for. Never had it apart before so don't know what to look for. Just flat plates so don't know why it runs now. Put a bar in the drive line and bumped the starter and it is not tight just enough to make the blades run, but dangerous. Hate to through new clutch at it if I don't really need one$$$$$$. Thanks for your time!