We just purchased a Roo 19 last weekend and I noticed the same issue with the water pressure. I checked the kitchen faucet tonight and sure enough I found a restrictor with the small hole. In addition, I found a lot of glue and piping burrs leftover from construction. Cleaned everything out and normal pressure has been restored.
I disassembled the faucet head and found the same disc in there as rocknroos. Definitely a restrictor. I pried it out and all is now well.
Ironically, this piece (restrictor) causing the grief for so many is intended to conserve water but is better suited for domestic applications where water pressure may be higher. Ill suited for RVs, especially if you're running off the pump.
Keith, Lori & the Wild Bunch TT: 2011 Rockwood 8293RKSS TV: 2009 Dodge Ram 1500 CC 4x4 (ya.. it's got a Hemi )
Our mh kitchen sink has a pull out flexible hose to faucet head. Under sink the hose connects to the main faucet assembly with a set screw. Loosen the screw and the hose comes off without turning. Found plastic (like furniture wrap or Teflon pipe tape) in end of hose. Removed that plastic and all was good.