New staircase model of Greg Zumwalt's excellent Marblevator staircase. This is essentially the same as the original, with some text on the base plate and "marble" holders. I mainly created this due to an issue with my printer printing the original model, it is meant to fit together with the original parts and design. You will need to cut or sand down your inner stair steps slightly to fit this staircase.
Also a model for some shorter trestle clips are attached, for use with the original base.