Quad triple header (missing but planned episode)

Quad triple header is a missing but now planned episode

plot: the episode begins with mill on a siding. He says that his train gets heavier some days and starts to get out of breath. Into which Coolt comes up and says “well us tank engines never get out of breath. Maybe you should be a tank engine (prior to what would change in season 4) and you will feel a different engine” he puffs off to fetch a goods train, but on the day mill is bound to come back. He falls ill. So the branchline engines have to pull it. Coolt at the back. Zack in 3rd. Peter in 2nd and Thomas boi in front. The 4 engines get a move on. “Come on come on” puffed Thomas boi “we’re doing it we’re doing it” panted peter “let’s move let’s move” chugged zack” “get a move on get a move on” said Coolt. Soon they were heading down the mainline. Than they saw the hill. They made it up but it was too much for Thomas boi. His driver blew his whistle. The 3 engines were on there way again. When they saw the station in sight. It was too much for zack and peter. Coolt couldn’t pull the train on his own. But on a siding stood mill. The episode ends with the branchline engines going back at the shed and mill giving a wink to Coolt.