Equal-i-zer hitch and TM 2720SD

We are going to pick up our new 2013 TM 2720SD on Friday. In reading through posts here, I read that there was a potential problem with the Equal-i-zer hitch and the slide out models. Does anyone know if this problem still exists concerning the interference of the bars with the swing away hitch and slide out? (The thread was from 2006.)

The dealer is supposed to install the hitch for us. What should I look out for? How will I know if there is a problem? What is an acceptable way to deal with the problem if it occurs? This dealer is relatively new to selling TMs and I am concerned that they may not deal with the issue correctly. They told us we would not need a WDH when we purchased the TM, but finally did agreed to provide one.

Thanks for any advice!