Does anyone know how to re-install the case on a BR1500G? I had to take it apart to remove the battery which was swollen. Now I can't figure out how to put the case back together. The transformer is blocking the case from closing. I replaced the battery with a new APC battery and it works fine except the case doesn't close right. There is a video on how to tear apart a 1000VA APC but not this 1500VA.