Tony
As I said I'VE never had much luck with Tamiya acrylics, using both old (larger pots) & new (smaller pots) stocks, thinning with Isopropyl, Car windscreen wash, water, Tamiya thinners, Medea a/b cleaner, etc.
I've used Badger 200, badger 150, Iwata HP-C, & 2 different compressors & it still sprays like treacle or water for me!
The paint finish looks like dusty pebbledash to me, lumpy & didn't stick well, but that might just be me!
One of the guys in my hobby club uses cellulose (lacquer) thinners, & gets good results, but I've not tried that, as I switched from enamels for social & health reasons.
As said, I like Vallejo because it sprays very well, doesn't smell, is easy to handle, 'shake & drip', & cleanup is pleasant, I'm far more likely to just paint eg, fire extinguishers as required, rather than pile it ip for a major session, but I still have a lot to learn