Thanks to both of you for your help. I had some time today to look over the belts and found a very small rock stuck in the right wheel drive belt! Got that out then tested it out and it seams to be moving better now, but I still notice it kind of jumpy while moving sometimes.
Also, I should note that the right wheel drive belt fell off the pulley while testing, and I also checked the transmission belt to find a bit of play in the trans pulley and trans idler arm pulley. Is this normal? With all that said, do you think if I replaced both wheel drive belts that would solve my problems? This is my first time owning and operating a belt drive machine so I don't know much about them.