I have read about that drilling and adding the tube. But in three winters of flying in very cold weather, like yesterday, and deep snow, I have never had this problem with any of my FPE motors. These pictures were from yesterdays flying and it was extremely cold, no problem starting, just make sure lots of gas on the choke the switch on the ignition and second or 3rd flip she starts. It is a great plane to fly, especially upside down, she stays leve and is very stable. So it is not a problem to come across the run way a couple feet off the snow. Hope you enjoy yours as much as I do. I have mentioned this before, but she has over 1000 flights.