Well, after flying for 2.0 hrs, we landed at Gainesville and planned to switch out. I rested for a bit and took a breath then got ready to head back out. After I started to engine and ran it up for a while, I noticed that the Attitude Indicator didn't spool up. Of course, we checked the vaccum pressure gauge and that checked out okay, and we just continued to finished up the runup. After that was completed, the attitude indicator didn't read normal. We decided to head back and taxi to the Gator maintenance hanger and get it checked out. So there we were, just hanging out. Of course, this meant that I wasn't able to finish my lesson and that I have to finish it up tomorrow. That's how the Piper Seminole rolls seems to be.