Painting Q

Hi all
I am trying to paint the mid 60's players that are molded to their bases. I have cleaned them with dish detergent soap and warm water. I have tried enamel and acrylics and after I am done the paint flakes of very easily. I am guessing that I am goint to have to use some kind of clearcoat primer. If that is true what brand should I get and how should I use it?
Thanks

[5-13 Studios]

for hard-to-stick-to resins and polystyrenes, i make a trip to the local hobby shop and see what primer they have. the item that has worked best for me in those situations, is called mr. resin. i have no idea what is in it, it's all written in japanese except for the mr. resin, but i swear the stuff will stick to vaseline! you could also try some of the newer krylon products that are made for plastics. even if it's not a primer, it could make for a good basecoat.

Thanks 5-13 Studios