Thomas, if the moulds are polyester, do yourself a favour :
take heavies out of them, guidecoat, and polish these so they are spot on, and then take epoxy moulds from the heavy patterns - alot of work, but the finish will be worth it. - especially if you're using a clave, as the polyester expands during the cure.
If you use car laquer, don't use the stuff in arsehole cans from motorfactors, get a proper bodyshop to make the can up, or better still, rub the parts for them, and give them some beer tabs to pass a couple of coats of laquer over them when they next do a job.
You see, gun laquer is thicker than aerosole, and settles nicer. Your parts look like the pressure in the can or gun was too high, and that coupled with surface detail gives you that finish.
Are you autoclaving or just oven? A good mould surface will eliminate a lot of any porosity that might occur, but it's not a bad idea to dive everything a rub back and resin wipe it, or paint some resin on and knock that back.
Anything else you need a hand with just ask.