Welcome to iRV2.
Sorry I can't really help with your question ; I'll just offer a word of caution .
If you are offered an aftermarket warranty when purchasing this unit , be aware that most of these warranties will NOT cover any repairs that should have been dealt with by the manufacturer, during the first years warranty. So the cost of a lot of repairs, and adjustments in particular , will be your responsibility .
So if the dealer is offering an aftermarket warranty to " sweeten " the deal , get the warranty paper work and read up on it before you sign.
As far as the slide is concerned , most RV manufacturers , buy the slides mechanisms , from companies like Lippert ( LCI logo) so finding out the brand of slide, and asking about problems , will probably get you more replies.