ahh - that's what I thought
Well I found that both of the pipes wern't fully sealed on my PCV heater and that was my vac leak.
It needs all of it to be sealed as the vac supply from the inlet manifold to the PCV heater will leak vac/boost around the seal of the PCV heater and out of the other 'big' tube on the PCV heater too.
I jublee clipped all my pipes and now NO LEAKS!!!