You can try lowering the U1 Accel parameter to see if it helps.

You can access this through the Limits menu after the ECU has been powered on by pressing the Limits button once, then press AND hold Limits button down and press the right arrow key. Once you have done that you can let go of the Limits button. If the U1 parameter is not displayed, simply scroll through that menu with the arrow key until you see U1. To change this value, press AND hold the Change Value button (small arrow will appear next to the value indicating it can be changed) and press the left arrow key to lower or right arrow key to increase; but in your case you need to lower, so left (-) arrow key is what you will press. Each push of the button will change the value in increments. I would start with two "clicks" lower and try a start.