I had to finally refill a bottle during our last outing. I had some issues removing and replacing (especially replacing as it was heavier) the bottle due to how the main feed to the trailer was routed.
I've placed a link to a picture below. The hose is routed around the road side bottle from the regulator to the pipe that feeds the trailer. You have to slide the bottle out of the loop and back through it when replacing it. I was curious if anybody elses was routed the same way?
http://i52.tinypic.com/2s8plj6.jpg