i don't know why but when i put a grav lift on and angle pusing against a mongoose it dosent work. if you don't understand a diagram: Mongoose <- Grav lift force and the mongoose dosent move, ive even tried putting it on the mongoose and changing to custom games
The Grav Lift is held by a weapon holder I assume. Try having the mongoose spawn in the air (just a few inches) and when it drops it'll probs be affected by the grav lift. But I'm not sure. If your driving the mongoose then it'll be pushed but like I said I'm not 100% sure.