OK .. might as well fess up to my stupidity ..the bad news is I was too impatient and started cleaning the PF the other night with a little Metho on a rag (after a few sherbs) just so see how it would come up , instead of waiting till the next day and buying some Shellite.
Result was a bit of paint loss in one area .. which means now I will have to do my 1st ever PF touchup .   
Will post some pics when I get home tonight . You will see there are a few other areas on the PF which need touchups anyway.