1.7.4 Redstone Elevator

this is my original Redstone elevator which I have been creating versions of since Minecraft 1.3. This is version 4 of the elevator which is the first one of all my elevators to feature a way to get down. the elevator fits into a 8x8 space and only goes 3 blocks deep at the bottom and two blocks higher at the top. this elevator is specifically for single player as it is glitchy and unreliable in multiplayer though there is still a chance it might work. please comment on this with feedback or if you think you can make it smaller comment a link to a world download for it so I can see it.