Make that the ''jump sit'' wall of the ramps at the airport be further away for longer jumps

I started to realise when i was trying to get the rocket pilot badge that at the ramps at the airport there is a wall the make you jump of your sit. But the problem is thats your in the air when it happen, and because of it you can’t get the 5 second air jump. So i just wanted to ask if it possible to move further that wall.(sorry for my spelling)