Ok I went and looked and I did not remove the restrictor. There was quite a bit of confusion when I purchased this unit. So I can't quite remember all that went on. It wasn't supposed to be sold as it was a prototype and was supposed to be for in store use only. I'll try to speak with Albert tomoro and see what he recommends. I would prefer the Vertex membrane but I have never seen any for sale until Tyler mentioned it in an earlier post. Thanks for all the suggestions
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