I've had my 2008 Altima 2.5 S for about a month now, and I love it and have customized to my liking. However lately I've noticed this clicking noise upon acceleration along with the horribly annoying (but normal) drone from the CVT. It's not an engine knock; if it is it's not one like I've ever heard. Should I get this checked out when I put the car in for a different noise coming for the brakes (a whole other story) or is this normal to come from a CVT?