Had the same problem on our last TT. I removed the faucet spout and there was a ton of PEX shavings that couldn't make the turn up the spout. That would be another thing to look at if removing the screen doesn't work.
2015 Jayco 24FBS Elite Jay Flight
2013 Chevrolet Silverado 2500HD 4X4 6.0L 3.73 Axle
HD Trailering Package with Integrated Brake Controller
Equal-i-zer Hitch 10k/1000