I basically do the same as H.Wayne S does. I haven't found a good way to do the servo-choke thing without a bellcrank so I use a ball link and piece of wire through the cowl. The only difference is I put a small wheel collar on the end for something to hold on to instead of the small loop. I also use fuel line through the cowl. I like the KISS method and this fits it perfectly. The only downside is I can't choke the engine off in flight if the throttle servo or linkage breaks.