NOT TO PLANS For this former, I'm going with a Hybrid shape between the Bob's plan and what is used on the Avipro kit. Using the Avipro profile and T3 tubing per plans. My thinking is the flat shape will help avoid the necessary shrinking/streching of the aft end of the tunnel . It also gives a little more room for gascolator and fuel selector location. Time will tell if this a good decision.
