I have a kit for CLC for a Night Heron. I received the YouNeedThis amount of resin, but...I want to put a pre-seal on all four sides. Wondering if anyone out thar has done the Night Heron from CLC....did a PRE-seal(inner and outer) and if the "designatiedly-sent amount" was enough. Sure don't want to be in the process toward the end and find myself...short...of resin??????