Xtrcrylics Problems (think I spelt that wrong)

I've used a few bottles and got great coverage. Pressure was probably 15-18psi, and I believe thinned about the same as you but maybe 20%.

I did use Tamiya superfine primer though. Have never sprayed it on bare plastic, but I doubt priming is required. Maybe there was something remaining on your plastic that whatever you washed it with didn't completely remove.

Circles of bare plastic sounds like you didn't clean off all the mold release.  I've had that happen on a resin kit I was working on.  Best solution is to take some soap and water to it, let it dry completely and then try to cover up the baare spots.

yep I think your both right I did wipe it all down but with it being an older kit I should have been more thourogh , still dont feel these paints grip as well as they should though 

I've used a couple of different Xtracrylics colours & never had a problem with them & I spray over automotive primer, also used the Xtracolour enamels and they are superb, I've found that if your going to thin the paints maybe thin a little less than recommended, I use a Terumo syringe to thin paint & do it by eye, couldn't give you a exact amount but it works for me.

Xtracolour Enamels

Xtracrylics.

Scott.

I think I m going to try the enamels , I just seem to be happier with enamels , maybe the smell triggers some childhood memories

Or maybe I just understand them better , the Glosters on the mend now too