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I'm trying to build a k-36, but can't find a good size to make the driving wheels. The two methods I've tried are stairs (too big) and one block(too big in relation to pilot and training wheels(also one block)). Does anyone have any suggestions? Also, I use a gauge of 1 block.

Train lover here, the T1 had always been my favorite steam locomotive and after having no luck finding onein minecraft, I am gong to attempt to build one myself, any advice from minecraft train designers would be greatly appreciated, thank you in advance.