Low shower water pressure?
If anyone has low pressure, ours happened to only be in the shower, check the hoses near the pump. On our SP220 they are under the couch. I had to remove the left side by taking out some screws. One of the hoses was kinked and one was squished behind the slide out. The hoses were too long and routed carelessly from the factory. The pump was also louder than it had been because it was struggling. I cut the kinked section out, rerouted them and tied them out of the way where necessary.
Pump was also only held down with two screws instead of four. Must be a cost savings. :-)
Hope this helps.
2010 Nissan Frontier Pro4X
Dave's RV Center, Danbury, CT.
"It's okay for a man to smell like bacon"