2014 LT1045. The PTO will engage when the deck is at its highest setting. It will not engage when the deck is at it's lower settings. Also, if I engage the PTO and the blades are turning when deck is high, they will stop spinning when I lower the deck. Finally, I can hear that the blades are not spinning at full speed when PTO is engaged with deck height raised. Belt is brand new. Not sure what the problem is.