cbborromeo
Contributor
I own an older Micra, which was the first model to have that "problem". I see it as a result of having a smaller profile exhaust (where the bubbles come out) as welll as these new low profile masks. However, you will always see bubbles if you are vertical, rather than horizontal. If you are a photographer or are really bothered by a bubble here and there, then go with a reg that has a large exhaust tee.