I bought a second hand 2019 YF7000 Southerner in October 2020. Great boat, very happy. However, the deck is constantly wet. Not flooded, but an annoying amount of water under your feet. By my calculations, the outlet holes in the vee drain at the back of the deck, are the same level as the scupper outlet on the transom which is below water level. Seems like a flawed design. The "squash ball" non return valve arrangement seems to be working (not stuck but who knows what is going on in there when at rest?). When you're underway the water drains off but afetr a while at rest, it seems to get water back on the deck. Has anyone with a YF7000 had similar problems or even better, come up with a work around?