Download this for about £17
http://www.dauntless-soft.com/PRODUC...School/atp.asp
Good thing about it is you do not need to be online to study the questions so stick it on a laptop and use it on the ride stateside. Also emulates lasergrade so you know what to expect come test day.
My ATP oral indeed consisted of lots of q's about the type but also lots of other stuff such as runway markings, procedures for parallel ILS ops, land and hold short ops. Dont just think you are going to get given an ATP by knowing the tyre pressures of the type you are doing the checkride for.
I can recommend that dauntless software.
Good luck