I've been meaning to write this for a while now. When I put down my roof, I look at that last bit like when you deflate a pool raft. You got to get that last bit of air out. I have a power lift system but this would apply to a hand crank as well. What I do: Always check for internal obstructions before lowing the roof (people have forgotten to do this and have even left the door in place). I leave pillow on the beds and the shepherd poles but that's it. Lower the roof until it stops but pausing at a few points along the way to tuck in the canvas. On most, the roof stops at about 2 inches above the rim. Extend out the turnbuckle latches so that they grab the roof-side latch. If the two latches do not meet, even with the turnbuckle being fully extended, apply a little weight to the corner of the roof to get the two to meet but ONLY if the gap between the two latches is 2 inches or less. Anything more and something is wrong. Using the turnbuckle lever to pull the roof down but do not close the lever. Walk around the camper doing the same to each corner. I like to think that the time it takes to walk around the camper, doing each turnbuckle, allows for the (using the deflating pool raft analogy) air to get out. These walk-arounds also give you time to look fir other items which need to be put away. But don't get distracted! Put those items on the roof as you walk around so they will be seen and addressed before hitting the road. Returning to the first turnbuckle, release the lever and separate latches from one another. Shorten the turnbuckle until the two latches can once again be connected. Again, using the turnbuckle lever, pull down the roof down. If the turnbuckle can not be shortened any more, push the lever into the lock position. Otherwise, return to this corner and try again on the next pass. Continue to each corner and walking around the camper until all levers are in the locked position. Do another walk around to verify the all levers are in the locked position. Ideally, the turnbuckles will fully retracted when the levers are in the locked position. I personally feel that there are certain tasks which only one person should be responsible to complete. This is one of those tasks. Having one person doing this will help prevent mistakes. And if something is missed, one person to blame.