Well, just an update. I cut recently with it again and it was totally stopping on little inclines. I had to squat down and literally push it to get it to start moving. Took it back into the shop and advised them this is the 4th time I’ve been in with this same issue. He said they would make it right and take it out to cut on a slope if they had to.
The entire area at the dealer is flat and like I said, the mower is totally fine on flat ground. It will even go up the trailer ramp fine. It’s when it’s on grass and going up the smallest degree of incline that it starts acting up.
It’s just frustrating. I’m very anxious to see if they can find out what causing it, get it fixed or even duplicate what I'm describing.