So I got my bulb finally.. go to put it in my fixture which is rated for T8 and turns out the bulb is a T12... man was I angry.. this is all I'm waiting for to finish my new enclosure and get my guy in there.. What do I need to do now? Return the bulb and ask for the same one but as T8? Or return the fixture, unwire it all and get a T12 fixture? Help!!!