When I first tested it I realized the stock reservior was much to small but I did not want to spend upwards of $200 on a new high capacity tank so I decided to make one. I found an old dented up stainless steel 1 Liter bottle, brushed all the stickers and paint off of it, cut a hole in the bottom and JB Welded a hose fitting on the bottom of it. I also drilled a small hole in the top to act as vent and as of now it seems to be working just as good as a $200 one.
This setup allows you to turn the tires from lock to lock with one finger evenwhen the vehicle is stationary. Here's a video of it in action... It's not the best video of it as I was trying to both video and run the wheel at the same time but I'll try and get a better one up soon.