My Lesco HPS ride -on is having trouble going up the slightest hills belt starts squeaking and have to jump off an push until levels out again. To me it feels like clutch is slipping just wondering is their an adjustment on these machines . Did internet search and came up with nothing. The problem is, it is least then 2 years old and this week i had to buy a gas tank because the old one started to leak were they fused to 2 pieces together and a gas cap were old one cracked and a cable for the 3rd hole open close. Any one else have this problem and can help it would be very much appreciated.