(Right is the new design, Left is the old pic I posted earlier when I asked for help) I updated the valve gear to make sure it was properly connected and SHOULD work properly now. Unfortunately I did have to remove some of the red pieces to accommodate the edited rod design, but I may try adding a layer of plates on the chassis block to raise the whole body and running board up to see if that'd still give some clearance for the rods to move. Though if there is any glaring issues with this...