Join Date: Mar 2004
Location: Newcastle Upon Tyne
Car: MG ZTT
I've occasionally come across the same problem over the years.
I think often you just get a bad can of paint (maybe from a bad batch). I would try getting the same colour from a different spray paint manufacturer.
Last year I tried to re-spray a mates door mirror for him and ended up chucking the spray tin away and buying another one elsewhere.
ps make sure you first coats are very, very light. Later coats can be slightly heavier as they stick to the first coats.