Tech help please. 100% beginner. I recently purchased a K1C. I ordered the package deal that included the dry box and a "Smooth PEI build plate". The original PLA plate was metal both sides. Makes sense beacuse it is held in place with magnets.. Works great... The additional PEI plate had 3M adhesive covering the backside ? ? ? How do I use this on a K1C? Did I get the wrong plate for my printer?