Re: yamaha 1100 1997 Over heating
Its been awhile since I've had one of those apart. You may have to take another layer apart, but it's easy as you've noticed.
The gaskets are metal and usually come apart nicely.
You can try them dry. You can spray them with black paint. You can spray them copper spray a gasket, or you can use a thin amount of any "form a gasket". High temp is not necessary.