Anyone have any experience or hear anything good/bad about it?? .40 is thin just wondering if anyone has used it or has had any problems with it. This will be for a High compression Type R motor...

 

I have used it a couple(5 to be exact) of times and they seal very well only had one time one leaked and it was because of a dowel problem & warped head not the gasket itself they did well on the design and it seals well nuff said......