Thanks for the welcome. My experiences with other brands of plastics was, I would order a batch of 5, 5gal containers of plastic, worked great, could run 6 cups of plastic in a presto pot, or two pots with 6 cups, using Bears stir systems. Make clears with glitter or pearls, without any issues, would come out beautiful to the last lure. Then you order another batch, and it would yellow in a short time. Then I found this forum, did some reading, and most seemed to like the plastic. Then I see this thread, so not trying to be negative, because this seems to be an issue with many brands of plastic, just before I buy again, I would like to see problems solved.
Also, everything I use was cleaned maticulously. When I had issues, I did everything on my end to make sure it was not me causing the yellowing. I never heat plastic more than 330 degrees, then lower the temperature to around 290-300 to hand pour.
So in conclusion, anyone who ever used "Good" plastisol knows how well it works, and how clear you can pour large batchs of lures with no issues. And how enjoyable it is to make good lures without pulling your hair out LOL