This can be a number of things but more than likely it is either oil in the woods surface before you applied your True Oil this does prevent the finishing oil from truly curing, or you have not left the first coat to dry and properly cure. As you are only at the beginning of re finishing I would be tempted to remove the finish that is on the stock with a solvent. Then let the solvent evaporate leave the stock over night then re apply the true Oil letting the first coat fully cure before applying any further coats. You could keep going and apply more and hope the dryers in the proceeding coats will improve matters though you can never be sure.