I don't say this lightly but I agree with the others - pay the money.
You are not going to be able to fix this with a little sand paper and a rattle can. This is not a DYI project and all you can do is make it look like junk.
The experts will remove the offending clear coat and put a better coating back on. Your rig will look better than ever and it will be over.
I had a similar situation with the cap on my TT. It was faded and looked awful. I could doctor it up some but it would never look right. I paid the money to have it painted and I'm glad it did because the end result was that it looked better than new.