Hangar Flying

:?: I have had a customer bring in a Long EZ that needs abit of TLC.  I need to get some vortex generators, Right hand nav /strobe light platic cover, information as to what type of resin and cloth is used in the cowling and wings.  Is there any published  delamination allowed in the cowling and or the wing area in the engine compartment?  Seems as if the exhaust heated up the lower cowling and wing root area at some time in its 1300 plus hours.  Thanks Keith