Improper glue spread. Panels show evidence of crushing along joints. The moisture content should be within tolerance. The problem may be occuring due to occasional pieces of stock with high moisture content. Moisture content too high.
Panels show evidence of crushing at the corners next to the shoes.
Isolate the questionable shoe or rearrange the stock so as to distribute more evenly the entire length of the panel. Entire edge pressure being applied to only a small area. Increase or add cooling to glue pot. Check the formula as to that suggested by the glue representative. At not time do we change a glue formula without consulting the glue representative.