I have a Giant Revive which I bought New (old) stock back in 2010. It's been sitting in my shed because it has a floppy handlepost. I contacted the shop where I bought it but…anyway I aso tried Giant GB, other bike shop to no avail. I think there should be TWO wedges on the locking device for the post but i am unable clarify this. I have searched the Web. I have attached a couple of images and would appreciate any help in this matter, especially if there is a wedge missing. thanks in anticipation.