Hi Everyone, Just running into some issues with the xpCover modifier. I am trying to simulate a flock of butterflies landing on a surface and then taking off. I decided to xpCover to simulate the butterflies landing, with a bit of turbulence to break up the motion. No problems there. However once the particles have covered the geometry, seemingly nothing will shift them off. I've tried wind, turbulence, speed, direction, switching the modifier off, changing groups via questions/answers etc but they seem to be stuck on. I'm aware the xpCover modifier has Velocity & Force modes, and it seems that Force mode is what I want in order to shift the particles but that seems to have had little effect. Any thoughts/tips?