Bowed Engineered Flooring Planks

Yes, the planks should have been straight. The wider the boards the less they will bow. It is when you cut narrow boards that they will bow. Don't get me wrong, large boards can bow. But not as easily. I have been installing hardwood for 28 years. Just because it is cherry does not mean it will bow easier. I also am a wood worker and process my own lumber. (Cut the tree down, Have it cut at a mill, and dry the lumber in my kiln.) I dry cherry all the time. You do get some bowed boards on occation. But, if they are bowed you do not use them for long projects. It sound like the boards were not totally dry before they were glued together. Even if they used to much glue it would not have made the boards bow if they wre dried properly. These layers are glued together before they are milled to size. If they were dry they should not have bowed. It sounds like they used poor quality trees or milled large branches. Some loggers will try to pass large branches off as trunks. Branches are hanging out to the side of the trunk and are constantly under stress due to gravity. They will bow and split easily. If milled these should only be used for small projects, not flooring. I am making assumptions, but this is the only reasons I can think of for the problems.