Now your cooking JN , Wallindas decription with the pin is pretty much what I do with bleeder carbed engines and Rodney method of setting the cutoff with the trim is also a time tested method. Some radios can program to do this cutoff but it still be setup mechanically the same as Rodney described.

I have one LA 46 left and they are extremely user friendly you will enjoy it. Mine does yeoman duty flying a heavy old plastic arf floatplane around but it seldom goes to the lake. I just launch it off a launch dolly and land on the floats in desert hardpan. A few strips of duct tape takes care of the keels

John