Robby IF your tree is suffering from WLD, raise the tree's root zone up to 70-F, and WLD will stop. Shading the leaves works IF the root zone has enough heat.. However, from reading the information you wrote above, it does not sound like WLD to me. I think there is trouble inside the container. Either there is not enough root zone oxygen due to over wet conditions or compact medium, or there is something wrong with the roots. If it was my tree I would pull the tree from the container and examine the root system.