Odd. Spin Jumps are lower than normal jumps. Maybe it's the fact you're using an emulator... I mean, when I use emulators this is never a problem but it sounds like it's your key repeating when you hold it. You know, like when you're typing and hold a, you get "aaaaaaaaaaaaaaaaaaaaaaaa." When you're playing and you hold whatever the button is assigned to, you get "jumpjumpjumpjumpjumpjump" instead of "JUUUUUMP!" ...Does any of that make sense? Well, what I'd suggest is increase the time it would take for the keyboard to repeat itself, or if the buttons are set to turbo turn the turbo off.