I just purchased a 2001 Hunter and found at least one of my anti-siphon valves was not connected. If you own a Hunter and I might be able to look at your system it would be a big help. My boat is in Alameda Ca. and was hoping someone local might come to my aid. If anyone can recommend someone who can work on my Raritan toilet in Alameda that would also be great. Have a great day.............. Tom