Hi Brad it probably is a kiwi problem. If covered by Australian epoxy it will bend, hopefully like the rugby team, touch wood. :-) from acrross the Tasman.
John

: My 430mm wide hull glassed on the outside a week ago is now 470mm wide. I
: hope to sand and glass the inside real soon before my design concept
: changes from narrow minimum rockered hull to a sea kayak, and before any
: cracks appear on the inside. Is this amount of movement normal, or is the
: wood I am using (New Zealand white pine) particularly susceptable to
: shrink/swell compared with cedar (cedar is very expensive to import here)?