Please help me get this image right

Hi Guys.
Going through my old photos seeing as my camera is at the doctor. I have this 4 image panorama that I stupidly used the polariser on, plus I didn't go to the effort of putting the camera on tripod, setting everything to manual etc. It was just click click click click. So I've been struggling to get the colours matched for each image and to sort the sky out, but it's still a bit blotchy.
Can anyone give me any ideas how to smooth the sky out. Things I've tried include:
low opacity blue colour to go over it
low opacity clone tool
blue gradient over the sky
Any other ideas would be greatly appreciated.
Thanks,
Owen.
Going through my old photos seeing as my camera is at the doctor. I have this 4 image panorama that I stupidly used the polariser on, plus I didn't go to the effort of putting the camera on tripod, setting everything to manual etc. It was just click click click click. So I've been struggling to get the colours matched for each image and to sort the sky out, but it's still a bit blotchy.
Can anyone give me any ideas how to smooth the sky out. Things I've tried include:
low opacity blue colour to go over it
low opacity clone tool
blue gradient over the sky
Any other ideas would be greatly appreciated.

Thanks,
Owen.