I used Meguiars NXT 2.0 tech wax but I only let it sit for a few minutes before wiping it off with a microfiber towel. I watched an autogeek sealant application video just now where they said wait 45 minutes. I also found a post by a Meguiars rep (I believe) on a forum saying wait 20 minutes. Would it be in my best interest to re-wax the car ASAP?