Not really. Remove some of the screws holding up the colorplast bottom liner to see what’s what as far as access. Drain and flush tanks then us your leveling system to cause the excess water in the black tank to run away from its drain. There are four bolts on each valve that need to be removed in order to slide new valve in place. It’s not that hard it just takes time.
2018 Redwood 3901WB pulled by 2016 Chev 3500 HD DRW. Goodyear G114 tires, Moryde I.S., Kodiak Disc Brakes, Splendide W/D, Tire Minder TPMS, Sleep # King.