Sliders and Dials in Storyline 360: Hidden Power Tools?

I had a student in one of our Yukon classes who was wanting to build an interaction where learners had to precisely place items on a horse (blanket, saddle, bridle, etc.) Drag and drop wasn't really the right solution because if they were using the free placement, once the drag items touched the drop target hotspot, they'd be marked correct. If they didn't use free placement of the drag items, the drag and drop option would then snap the drag item to the center of the drop target. 

One idea we came up with was for the learner to slide the items on a slider. The items they're moving are just photos set as the thumb, and invisible tracks: https://360.articulate.com/review/content/ce377f31-814a-43c3-aa67-40deedbbb866/review