After dealer clutch replacement, engine runs terribly poor

I have 2015 Gator 550 XUV with only 6.6 hours on it. It would not shift, so the dealer replaced the clutch under warranty; however, after picking it up on Saturday and starting it when I got home, the engine now runs poorly (it ran fine before taking it in). When idling, the engine lopes almost to the point of stalling, and occasionally does stall. Not only does this sound horrible, but when driving slowly, such as when pulling into the garage, it causes the machine to lurch forward (or backward, if in reverse), which makes it rather hard to fit into a tight garage with the risk of running into something.

Here is a short video of the Gator idling
Has anyone else experienced this?

Thanks!

Jason