Deck on my 123 came to a slow stop this morning after mowing about a minute, then the drive belt began slipping. After disengaging the PTO and trying again several times, still no go...just a hard pull before I'd have to shut it down each time. I decided to give the mower spindles some extra grease. No go at first, then, after more grease, everything worked fine and I finished mowing the yard. However now the deck will not DISENGAGE unless the engine is at low throttle, and even then I need to coax it to a stop by fiddling with the clutch lever a bit. I'd appreciate some advice here....should I try adjusting the turnbuckle? Also, it seems odd that my deck would need to be greased since it has maybe an hour on it all season (my yard is small) and it was well greased when we sto