Ok, I managed to find a photo of the gasket I was writing about previously. I can assure you there was no gasket cement / compound used on this, the gasket was bought from a quality gasket manufacturer. We could not work out what happened as this is the only gasket that suffered.
First Permanent ride the Z1R since Dec1977 (220,000km) as of June 2015
Second permanent bike 1989 FJ1200 dyno'd 140RWH, great bike.
Third ride is now the Frankenstein 1981 GPZ1100B1, 1983 fully recon motor fitted LOVE THIS BIKE
Forth my work bike FJ1200 1989 (same type as FJ above)