Here is one I found on found on a RV Online
2001 Terry Dakota. If your looking at used hybrids you want to take a close look at the area where the bunk end's tenting materal attaches to the trailer, especially along the top. If it has a slide take a look to see if it butts up to the trailer wall nice and tight. See what the condition of the rubber or foam seal is. I use silicone spray on all my rubber seals about 5-6 times a year. It shows. After 5 seasons they still look brand new, if you didn't they will start to deteriorate after a few seasons.