pic: prototype of ramp in up postion

[AustinSchuh]

As I was looking at your model, I knoticed that at the position when the ramp is at its max, the piston is pulling dirrectly vertical. When it is in this position, the force from the piston is not able to prevent the ramp from going back down a little ways until the piston has a better pull angle. I think that you would have better luck if the piston was pulling at a slight angle when the ramp is fully up, or you figured out some other way to prevent this from happening.