Bedroom Slideout Mattress Weight???

[Hans Jr]

So not sure if this is the right section or not. We have a new to us 2010 Fuzion 383 Toy Hauler. Our mattress which was replaced when we bout it sucks. I believe it is a Serta, and is about 6' thick and I cannot claim it as an actual mattress by our standards. My wife and I were thinking about throwing in the mattress from our home in here, which is a thick and heavy memory foam mattress.

My question is, how heavy of a mattress can you put on these slideouts? Im not trying to over load it and break the hydraulics or get it stuck to where it wont close due to weight. Our buddy started having problems with his toy hauler slide in his bedroom about a year after he swapped to a heavier memory foam mattress, but not sure if its cause his trailer is old and worn down or from the extra weight.

Any help would be appreciated. I know theres tons of threads on beds already, but havent seen one asking about weight. Thanks in Advance.