This sound slike several things may help. Lube is good and making sure the brake fluid is kept fresh is another.
you have a combo of things that may make it worse for you than other places. The brake fluid tends to draw moisture from the air. You likely store the
RV where humidity is often high, so that can make it worse than places that are drier.
The problem tends to be worse when that moisture gets in the fluid, stays longer so that it can start rust on all the different metal parts. If we drive it like a car, some of that moisture will get hot and tend to boil off but stored for six months, it has far more chance to build up and give us trouble.
Sticking calipers is one way, but the one I have had was the wheel cyclinders. I bought an old RV which was used as a mobile photo studio and driven very little.
I bought it, redid the really important stuff and drove it to California.
Sold it when we got back and the new owner reported ALL the wheel cylinders had to be replaced as they were rusty and the rust scored them too far to repair!
Changing the fluid may be worth the extra expense to avoid the much bigger expense??
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Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!
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