I talked to Ilja at grumania, he told me the 20N pipe is not strong enough. He is making me one. I did not ask him if the stock one is good for 30. I'd drop him an email. He made the prototype pipe for the avanti, not sure if he is making the production ones.

The turbine looks at home in this plane, rails are perfect size. I know the P20 needs tabs to move the rails more towards the midline.