well what else do ask my max 4 18 hp vanguard recently started to stall on hills.fairly steep and short my engine just seems to want to stall. if hill was any longer i would suddenly find myself going backward thinkin oh %#&t. Does anyone hav an idea what would cause this?? seems to be new problem cuz i have easily climbed these banks before. I am getting better and braver and braver and am approaching these banks at different angles,but this thing is definatley stalling. any insight would be greatly appreciated.