fat sacks

Hey everyone,
I have an 02 mobious v and the fat sacks are constantly leaking and in some cases they are emptying completely. Sometimes the caps pop off or the hoses come off. I has gotten very frustrating. Other than this one problem it has been a great boat and we have had alot of fun with it. I just don't really want to drop a bunch of cash on new fat sacks for a boat with less than 100 hours on it. Any advice would be greatly appreciated. Its warming up in idaho and we are looking forward to another summer. Thanks for the help.

Late, Luke