I did reduce operating speed. The dealer has the mower still so I am going to wait and see what they say. This mower is definitely either not operating right or its underpowered. Myself and my employees noticed it when I first bought it.
2011 Chevy Silverado 2500HD 4x4
2012 Chevy Silverado 2500HD 4x4
3 exmark Zero turns
3- 36" walk behinds
20ft enclosed trailer