If you have the EFTA, is it hard to loosen the straps once they are tight? I have been putzing with a few in the store and sometimes it seems like the harness won't loosen up once it is tight. I wasn't sure if this is because they are store models and have probably been there forever, and have had a bunch of people playing with them or if that is just how they are. It makes me nervous to get a seat like this if it is going to be that way when I get it home. thanks!