Supagard on black plastics

[Paul 165]

Hi Guys,
I picked up the new bravo last Thursday night and have been too busy until today to give it a real looking over, but finally got around to giving the car a good wash so I could get up close and look for any flaws. What I did find was that the £150 I spent on having it "protected" with the supagard treatment, was apparently applied by someone with about 20 minutes to spare!:bang:
I have found white over run marks all over the black plastics which considering the price of the sealant treatment, I think is ridiculous.
Simple autoglym shampoo doesn't really want to touch it.
Does anyone have and better suggestions?
Thanks

 

[kayl0rz]

speed detailer and a tooth brush, and then a black trim restorer... or as silly as it sounds... peanut butter!

 

[Andy Monty]

as above as kay suggested but before doing that use a pencil rubber to remove the thickest....