[nathan_hui]

Student version should be able to edit those files. Now it also depends on the structure of the model, but McMaster is generally fairly good about their models. Unless the entire file is a single imported feature (and McMaster generally doesn't do that), you should be able to open the part directly and edit the features to collapse the slider. The one problem is that a linear slide is by intent a dynamic assembly, not a static part. To "slide" the slider, you'll always have to edit the part directly. Or, you could break up the part into the proper "parts" and create your own assembly that more directly mimics the real-world performance of the slider.