I know they are a great machine, this one is not my first one. That's why I was asking about the newer exmarks. All my other exmarks could cut up hills,high grass, whatever I throw at it and it didn't bog down. My new one will cut up some of my hills about half way, then I have to lay off the throttle so the mower don't stall . Hopefully this is defect model and they replace it.
2011 Chevy Silverado 2500HD 4x4
2012 Chevy Silverado 2500HD 4x4
3 exmark Zero turns
3- 36" walk behinds
20ft enclosed trailer