Need help with dried Gameworks paints.

Posted in Custom Workstation

I went to my local swapmeet today and found a guy selling 15 bottles of Gameworks paints. I looked at them and they all were dried solid. I bought them any ways because he was practically giving them to me they were so cheap. I went home and added some thinner to the paints and 11 bottles of paint came right back to useable condition. But four bottles refused to cooperate and stayed clumpy and rock solid. I was wondering if anyone had any experience with a situation like this? If I can't reconstitute the paints I will just throw them away since I spent pennies on them but I thought I would take a chance to see if anyone knows what to do. Thanks and God bless.