Reading a post in the 601 forum, it refers to fitting an insulating washer under the ignition coils to reduce heat transfer.  It seems to be specific to the Glossy Black coils of earlier engines but I wonder if it is also recommended for the matt black ones of later production?  The document I refer to is: Jabiru Engine Service Bulletin Subject: Ignition Coils Applicable: Jabiru 2200 S/No. 22A12…