Don't get what people are talking about, "too expensive." In many cases they are free.

My guess is that airlines don't build a file of what would be confidential and personal information on people they do not intend to hire.

The real expense is the HR people to do the paperwork. Records from the FAA and other airlines are cheap (never paid more than $5).

As everyone here has stated (including your good advice), honesty is the best policy and the applicant has nothing to worry about.

As for checkride advice, slow down, don't get rushed, be methodical ... fly the box like you would your airplane.