AOS - Episode 6 - Out Of Puff

Henry is praised for pulling the express on time, and this soon goes to his funnel, and makes the other engines think Henry is becoming too puffed up in the smoke-box. However, when the Fat Controller orders trucks filled with a new type of coal, all the engines start to complain, but Henry is determined not to let a little bad coal ruin his day.
But when he feels his puff becoming heavier, he soon struggles to pull his express and has no choice but to stop and move off the train at the next station, where Gordon is there to see everything!