Bought this machine new, has 27 hrs, 160 miles. Recently started hearing a thumping noise, sounds like something spinning on the front propeller shaft striking plastic. I hear this noise when starting from a stop and only at very low speed (all of the other rattles and mechanical noises may be drowning out the thumping as I speed up). I've removed the tunnel cover and other plastic, nothing on the shaft, however, the coupling to the front diff input shaft has some play that I had noticed a few months ago. I also removed the belt housing cover, no debris at all, belt looks good as new. I'm open to suggestions. Also, on another subject, where is a solid point to place a jack to raise the front of the machine to remove one or both front wheels without bending the frame?