"Dave Liquorice" wrote in message
ll.net...
On Fri, 28 Nov 2008 14:37:12 -0000, dennis@home wrote:

No you are comparing unpainted with painted + magic additive. How do
you *know* that any difference is down to the paint, the magic additive
or a combination of both? We are trying to find out if the magic
additive has any effect not that painting (with or without magic
additive) does.

That is illogical as the additive doesn't work without paint, you can't
compare the additive on its own.

Yes, but how do you know that any difference is down to the paint or paint
+ additive when you only compare paint + additive against unpainted.

Well as I don't expect much difference I don't think it matters.