The nuts will be sticky initially. As the pecans cool, the nuts will become less sticky and easier to manage. If they do not, it is the result of the nuts not reaching a high enough temperature while cooking. The high temp is responsible for the brittle like coating on the outside the pecans should have. If they are still really sticky once cooked, continue to cook them in the skillet for a couple of extra minutes. Stoves can vary in how they cook and the heat. After this, if you find they are still sticky, bake them for a few minutes at 325 degrees until they harden. I would start with 5 minutes and check them. Continue to bake them in 5 minute intervals until they are no longer sticky. It should not take any longer than 15 minutes.