Can you post a pic of your aquasafe unit set up?

[Seriak]

The connectors are a real basic design. You just push the tube into the connector all the way and bam you are done. I know I tried to use tubing from a different RO unit with them and I got leaks so I had Aqua Safe send me some of their tubing and everything was fine.

As for the resevoir
If you have the faucet closed then the water will build up in the resevoir until a certain pressure is reached at which point no more water will be flowing through the system. The point of the resevoir is to provide a faster flow of water from when you initially go to use your water. Without it you would get the standard drip drip flow rate when you went to fill a container or aquarium.