My CC 1042 will not go uphill. I have 20 hours on my mower and it went up and down my backyard hill great until the last time I mowed with it in September 2005. I did not think much about it then because it would still go but just really slow. Today I got it out to tune it up, changed the oil and all the filters, took it for a spin around the yard and it would not go up the hill. I had to push it. Is this the hydro?? If so does anyone know if it is covered under warranty, you would think that it would last longer than 20 hours.