As a matter of fact city water pressure has been noticeably low, especially at the kitchen faucet. The toilet flush hasn’t seemed very vigorous either (I use standard brass pressure regulator at campground standpipe connection). The trailer city water connection itself was loose and leaking last trip, which I was able to stop by tightening the built-in 1/2” hex. Could too much torque on this cause an issue? Anyway, for now I was able to complete the winterization and (slowly) pump the antifreeze into the port… the fresh and washout ports flowed as they should. I will check valve settings again (exercise them?). I’m still relatively new to Oliver but the system is behaving as if there is a restriction & that needs to be addressed prior to dewinterization & reuse. Appreciate the feedback.