I have a MF1033 tractor. I think same as Hinomoto 2304. BEGAN HAVING TROUBLE SHIFTING GEARS. LEVER WOULD NOT ENGAGE. PULLED LEVER ASSEMBLY OFF AND I THINK THE HALF SPHERE THAT LEVER PASSES THROUGH IS WORN OUT. THE PIN THAT HOLDS LEVER IN PLACE COMES UP TO HIGH AND WONT ENGAGE IN THE TRANSMISSION. THE PIN SLIDES UP AND DOWN IN ELONGATED HOLES AND OVER TIME HAVE GOTTEN LONGER WITH WEAR AND DOESNT HOLD LEVER DOWN LOW ENOUGH TO ENGAGE TRANSMISSION I THINK. ANY CHANCE OF FINDING PARTS. THE ACTUAL HALF-SPHERE IS VERY RUSTY AND NOT SURE I CAN MODIFY IT WITHOUT SCREWING SOMETHING UP. MECHANIC WHO IS DOING WORK FOR ME SAYS THE TRANSMISSION APPEARS TO BE IN GREAT SHAPE WITH NO WEAR. ANY SUGGESTIONS WILL BE APPRECIATED.