I know this is a dumb question. My house is 65 years old and as such is not designed well for air conditioning. the short of my issue is, I have an airflow problem. I decided to install a new cold air return vent cover in my living room replacing the original one that had apparently been painted numerous times clearly reducing its ability to perform well. I got done installing the new one, looked down at it and realized, I put the darn thing on upside down. but I swear it seems like it pulls the air better in this position. Is that possible or am I just making this up?