I'm not sure what your code looks like, by are you using the FindRecord Method? If so, have you looked at the fifth argument (SearchAsFormatted)? If not, could you post the code that's giving you trouble so we can have a better idea of what's going on?
I'm not convinced Lorna is using code to do the search. If you want to change the option for when you hit the find button or when you press CTRL-F, then no, there is no way that I am aware of to change that option as a default.