I too have a question regarding my 2860DS Sunseeker's entrance door gas strut. When I first got the unit, I thought the door strut would not only limit the door swing but also softened the swing as it opened, yes, no? Anyway, the original gas strut went bad and being unfamiliar with struts I bought a replacement, only paying attention to the length, not the strength. It happened that I bought a 20# strut, it didn't do anything to soften the swing when opening the door which is what I want. I then tried a 40#, more resistance when shutting the door, but still doesn't soften the swing when opening.
I'm on the road at the moment and dealing with a nearby Camping World, unfortunately though they couldn't tell me which strength to use. So, if anybody happens to know the strength of the gas strut on a Class C entrance door (2860DS), I'd appreciate the info.