Yea the brake line job the guy had done was below bush league .. IMO... I would have never allowed crap like that to be done on my RV...
Some Youtube videos are actually quite useful and have great info.. I have made several myself tailored specifically to the Alpine fifth wheel... and i don't have music and such.. just the facts as best as possible..
For your Dexter axle maintenance use the Dexter Service manual and you wont go wrong...
https://www.dexteraxle.com/user_area...ice_manual.pdf