I just saw your post on robbins flooring. I also had installed the top of the line Hunington Plank engineered floor in July 2000 in my new construction house. We had it put down on a subfloor with glue. In less than 30 days the same cheeking and end delaminating occured. To make this short we ended up suiting Robbins, which is now owned by Armstrong World Floors, which is in bankrupcy. Good luck on your problem because we are still in lidigation and probably will be for some time.