Took me a while to figure that out too, push it up fully to compress, then remove it quickly. To refit compress the shock fully, then quickly stick it into the top mount before it expands again. Like most things, its easy when you know how

 

 

I agree there. Compressing them and giving yourself those precious seconds to get them in place is a trick. I also found, that even one last inch of drop in the suspension travel makes a world of difference!