New some help with something

I was a big forger in Reach, but I’m having a hard time with something in Halo 4. I’m trying to recreate a fan favorite from Reach, Rent a Hog. I’ve set up the map, placed ghosts/mongooses, put a hill down, set it to type specific and KOTH-HILL. Set the game type up, and set vehicle set to Warthogs. Upon starting the game, no vehicles or hill shows up. I’ve looked over things a bunch of times, but can’t figure it out. If anyone knows what I might be doing wrong, please let me know. Thanks.

I’m no expert, but it may not work now. Like the mines to make elevators won’t work anymore, sadly. Phasing them through object is fine, but when you do, they’ll blow up, but the coils won’t.

Sad to say, some things you won’t be able to make anymore, but you can still walk through walls and drive under small holes that you can’t duck under; driving a mongoose.