i have a '01 metro 36" with a 15 kohler. here lately when i start to climb small hill chen cutting i have to drop to 1st gear to pull up the hill, and in some cases if i don't get a running start it won't go up the hill. this mower was bought new in feb. 02 and only has about 25 hours on it. is there anything i can adjust? do i need to go back to my dealer? pulls fine on flat ground for the most part. if i can in 3rd and stop it's a little slow getting to speed, like a belt slipping but no sound or burning smell.