I've read recently people saying that necks with Tru Oil may have stability issues as they age. The finish is not hard enough. Warmoth does not warranty necks with Tru Oil. Tru Oil bad. I have built several guitars with Tru Oil. They are all less than two years old. So far no stability issues. I love the way the necks feel. They have varying levels of thickness from many coats with a thick gloss sheen to only a handful of coats soaking in to the wood and a light sheen. I wonder if I should add more oil to the thinner finish necks? Do necks with Tru Oil have stability issues?