I don't have a savvy yet, but have been doing extensive research in preparation for one. But I have had large lizards before. From what I have read you need to increase the basking temps. Most keepers have their savvy with a 130-150 degree basking spot
Paper towels won't work for a burrowing lizard like these. There is a chance that he is/was dehydrated and impacted. The lumps on the legs sound like gout to me