I have quite a lot of my P22 hoppers all made up and painted, ready for finishing touches and brake levers. I don't have enough spares from other kits for all of them, so I decided to design some that are just right and assemble them into a cluster for printing. They are different on each side of the wagon and will need careful cutting out.UPDATE these work if you cut them short just after the step along the length - see photos in the Cheona Publications series: engineers wagons and GWR wagons since 1948 - they only need to reach the smallest, nearest v-hanger and I don't think there is any difference between one side of the wagon and the other. They don't need to reach the larger V at all, but they are easy to fix with a scalpel so there's not much point changing the design now.
UPDATE these were only designed for using on the P22 model, but feel free to try them elsewhere and let me know if you find them useful.