Ha, l remember seeing those woodgas throtle bodys, never knew the reason why there are 2 flaps. Now it makes sence!
Well thats a ideal maridge of automatism and simplicity. I think l will go in that direction, thank you!
Oh, l found the reason behind bad performance with the automixer. A leak between the housing and membrane. Now the question is, fix the membrane and try again, or make a manual valve system with a “low throtle enrichment mechanism” as Til showed. Sugestions?