Hi and thanks,

The PPG recommended ratio never worked (it comes to about 1:2.5), the results where glossy every time. I tried again today with 1:1 and finished the whole model. Not sure of the size of my touch up gun but I used between 15 and 20 psi.
It is as flat as can get without having white spots. I'm pretty haapy with the results.

However it is very easy to leave "scratch marks" on the rough surface. my biggest concern will be with fuel/oil stains, they will be impossible to wipe out.

I'm going to try buffing the surface some using only a piece of buffing cloth with no rubbing compund.

I will post some pics tomorrow.

David