I don't know who needs to hear this, but just in case, I was running kopernicus continued and outer planet mods only, and the Jool texture bug persisted. After just deciding to roll with it, I reinstalled EVE, SVE, and Scatterer (which had caused me issues for forever) and the textures started working. I'm not sure if that means it's a requirement, but just as a heads up for anyone with a similar mod installation. Thanks for all the fixes and hard work!!