Are the coats solid, or just like a wash?
I use as much water as possible.
To the point where it's just about settling on the model without forming water droplets,
eg. the crux point at which uniform coats break apart,
too much water and you know about it, because you can't get a coat on without it breaking up
i probably paint everything with at least 50% water addition,
thin and quick, hair dryer, then more washes, hair dryer, then more wash!
then purity seal,
then quick highlights with very thin brush
then quick basing,
job done ,
speed speed speed