Below is a photo of
curil T on a camshaft gasket....
This has happened multiple times to engine builders who use Curil on paper gaskets...specifically on the cam plate gasket.
The Curil T does not allow the gasket to achieve a mechanical bond to the surface, relying only on pressure of the hardware. As a result, the gaskets can walk and leaks develop.
I use 574 on all gaskets with the exception of valve covers as they need to come off from time to time. No leaks and no gasket wandering.