MGBej1503

Just bought a ej8 coupe ex and it seems that only my passanger side power mirror does not work. The driver side works. All my door locks work what could cause this? Haven't came across this particular scenario with any other forums. And also do the locks and mirrors all run together or separately? Also my driver window when rolling down rills perfectly straight but when going up it comes off track at the top and starts to gap out. Does it just need to b put back in track?? I greased it up an it runs alot smoother but still goes off track.... one last thing. I was hit today by some retard in the driver side q p area. Luckily no damage.. althoufht my back bumper on the side seems to.flare out a lil now not perfectly aligned anymore. An when I look under it I see a white clip but when I push in nothing snaps into place. I have never had to.remove a rear bumper so Idk how their supported. Any ideas on what I can do or need to replace to get it straight?