Folks I am planning on picking up a second hand Milltek downpipe at the weekend. The one pictured is for example. Where I have marked in red when I shine a light from my phone on it I can see the light on the other side? Is this correct? Should it not be completely sealed? It has 4 tack welds on one side but on the side where the gasket goes I can see the light coming through when I shine the light.
![](https://uploads.tapatalk-cdn.com/20191105/7a09aa4ea308f491c389c8720ba95ba0.jpg)
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