Hello Peggy,I liked your idea of the safty cord on tools to keep them onboard (from another post, another forum a few days ago).But, as stranger things have happened, this is sorta strange... Working on the boat this past weekend, I dropped another screw driver, thought about your suggestion. Then, went to use the head, just liquid this trip, and when I tried to flush, nothing happened. The pump handle had very little resistance. No liquid (pee) flushed nor did the toilet try to bring in fresh water either. Worked fine till I dropped that damn screwdriver!!!!! Lesson: take good advise and USE IT! So, can you help me with suggestions on this latest greatest problem? The make of the head is: Wilcox-Crittenden and it is the Head-Mate Seaclos model. Its about 4 years old now. Thank you in advance. David Underwood