I have a 15hp Toro WB (Proline 37 Recycler Deck). The problem is when the grass is slightly thick (I'm talking about bermuda cut every 5 days) the deck will make loud noises and you can smell the deck drive belt burning and moving a lot more than normal. I have to dis-engage the blade and start back going slow. The belt is not torn and looks okay. Should i replace it anyway? Have any of you had similar problems? Thanks Guys.