Had this issue too Steve, a Sci-Fi piece, the resin itself seemed to leach out something and the various cleaning, even tried petrol, engine degreaser, IPA, meths, washing up liquid, even tried a water-downed PVA coat...all to do avail. Primer coats seemed to have grease or oil patches that reacted with the paint. Gave up and passed it on to somebody else.\ said:Very similar here.I once had some resin (and I can't remember from where) that simply could not be properly cleaned. This was nothing to do with a release agent but rather the rein itself. I chucked it in the end ):
Cheers
Steve
Si