I bought some of the excellent resin market goods from Bad Squiddo Games. Lovely detailed little models. Finally needed to paint them last week. Washed them in soapy water. Let them dry. Then brushed on my regular black Vallejo Surface Primer and got this...

Never had this with the Vallejo before. Primed other makes of resin the same day with no issue. Annie said that others had had issues with the Vallejo.
I gave them another good soapy scrub. The one I'd tried before and wiped clean seemed to cover a little better but still not good. The others just spread like the pic above.
I don't like spray priming and there are too many nooks and crannies on these that would need touching up anyway... So what would people suggest, please? Uk based.
Cheers
Andy