Yeah seems so,
The difference it makes is rather extreme as well, at least in my case it was.
This is how it was before(Wasnt even on the grooves!:
/---------------
This is how it is now:
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Spoke to the guy i purchased it from and he said he had changed a gasket in the inlet manifold but everything was put back as it came out. Guess something was missed
Very happy that this wasnt a more serious problem
