Hey Splais
All of my gassers need to be chokeed if not each time they are started then at least for the first start of the day. Is the engine in a cowl?

You could just hook up a rod to the choke arm and let it hang out of the cowl though a small hole in the cowl. For my engines that are in a cowl I like using a servo just for the choke, but with a 50 size the extra weight is probable undesirable.

What plane is this engine in? Good luck with the DA, I have two DA 100 twins and they aer awesome engines!