I know I just tell you what everythin he tested... he first had Airsal cylinder so he had there theese exhausts... So whyt not to test it with Hebo replica cylinder too?
Im not sure, because I didnt get any nice overview, I have no idea, i might ask some smarter guy ,who has build 70cm3. But i might even use setup 'EveryDay Use' , like you wrote up'there.