I think thats about right Ronhud.
BDC - you wont believe it but I caught my 'new' bumper and mudflap on a loose piece of the picket fence in our drive.  The nail in stored the paint and plastic and split the mudflap.  None daunted, and since I was spraying the rear step enayway, I've sprayed it again.  With the compressor, partial spraying seems to be capable of giving a pretty invisible job.  The only problem I'm having is little bits where - despite putting the barrier spray on and/or no plastic being visible - I'm getting a bit of bubbling in places.  So I;ve reapplied barrier paint, will lightly fine wet n dry and then go again.  But I seem to be cursed with marring that bumper  
 
The mudflap was tack joined using the hot putty knife / hot air gun techinique, and backed up with a strip of nylon (I have loads for model aeroplane wing covering) and the amazing Sikaflex 221 you told me about.  I melted it into the existing plastic with white spirit and my finger, much as you would smooth wet clay.  A really neat job and it should last v well so thank +++ again for your excellent tips.  
And yes, it is addictive.  I have a strong urge to spray the Freetop Silent Silver, but I think I need to...

....Calm Down - alright?
 
