I just finished installing hardwood in the first room of many and I get spots that are squeaking and sometimes popping when I walk on it. I what to figure out what is causing this before I continue through the rest of the house. The wood is 5" hickory pre-finished plank from Floor and Decor. I installed it on 15lb felt with 2" cleats. I didn't install any board that had any defect on the tongue or groove. The wood acclimated for 2.5 weeks. What could be the issue? I think I will have to apply babypowder throughout the room to see if it helps.