I ran into a similar situation when I split my first Ducati 900 motor open for a spun rod bearing. Ducati eliminated the gasket in the middle of the crankcase. Threebond had just come out with the 1194 stuff. It worked so well that when I had to reopen the case to correct a shimming error, I had to make special tools up to get the two halves apart.
Where clearances and shimming come into play, on the Ducs the allowance for the old gasket was .011" (from an unused .015" thickness). When using Threebond applied properly (thin) the allowance changed to nil.
I'd use it and not look back.
Merritt Island, FL
When a person asks you for advice, they don't want advice. They want corroboration.