The starter is an annoyance on the Phazer. At this point I would search the forum for the starter thread on how do DIY the starter fix, and at the same time figure out the oil change and save yourself $140/shot.
If the starter is going reverse, the poles have moved. I believe it can be repaired based on previous posts, but sometimes they are shot. The important thing on the starters is to locktite the bolts that hold it together and those that mount it to the chassis. Some bonehead forgot to do this during assembly and a bunch of 07 owners have gone through this pain.
You have a bit of work ahead, but its a good learning step since the Phazer needs an owner that can wrench on it.