I have a US41 on a plane I'm restoring. Noticed the carb has no choke valve at all. Manual says to "choke" engine before starting. This engine is in a WWI wqrbird. Because of the way it is built there is no way to get a finger in to cover the throat. anyone got any ideas on what to possibly do or starting a US41 without a choke.

I got a fair bit of gas engine experience; but this is the first magneto engine I've had and the first with no choke.