Just a thought, but have you taken an inventory by weight of the items stored in the slide? Often times slides have enormous places to store "stuff", but "stuff" adds up after a while. Could be taxing the motors???
'04 K3500 Silverado LS with LS3 Connect & Cruise- with Intimidator SSI PKG- Reprogrammed 4L80E
2016 Salem 27RKSS
1984 CHEV SCOTTSDALE K20 2GCGK24J0E1XXXXXX (Chevrolet Legends-Class of 2019)
"...exhaust fluid? We don't need no stinkin' exhaust fluid"