Re: 2007 JAYCO EXP
Is the 23B a pop-up with canvas sides and bed areas? If so, you do need to keep things in good condition, but we used one for 12 years with no leak problems.
If you would be so kind, please do not post in all capital letters. It makes things difficult to read and is considered to be bad manners.
Give us more information and we can probably be of more help.