Drive train problem

Slightly long story. A while back I embarked on the mission of putting small working suspension in my steam train. At first I thought this idea would be somewhat swift put I was far off. This suspension has taken forever to make and weed out any problems with it. Now that I’ve made it I would not recommend trying this as it’s pretty annoying. Although I have successfully created this suspension now and I’ve spent too much time on it to just ditch it,which is why I’m trying to avoid getting...