I would try to see how that front cap is installed on them.
According to the rv mechanics I spoke to before I bought , I have been told some mfg.'s have had issues with water getting behind those caps causing problems.
I don't remember which one's they were but it's just something you might want to look into.
I would also check on which slideout they use and see if there are any slide mechanism issues with the brand the Starcraft uses. Info is all out there if you search for it. You will have better luck using a web search bar .