1. My Jabsco toilet flush seems got problem, even after we draw out all water out after use, the toilet would be gradually filled with water (seawater filling in) especially after racing, I checked the handle was in locked position (see picture) - is it something wrong or we did something wrong?
2. If replacement is needed, any specifications need to be careful (is the serial part shown in the second picture ok?).
3. I heard about electric toilet, any comments?
Thanks in advance.