My camper is falling apart before my very eyes. On...

My camper is falling apart before my very eyes. One thing after another, bad hepvo valve flooding my bedroom, leaking black tank!, gray and black tank valve malfunctions, water pouring out of nose cone and 5th wheel hitch area during rain, slide gears stripped and out of alignment, to now a leaking living room slide!! Water pouring into storage and kitchen stairs while raining, This camper should be in the top 5 of campers, but it is number 1 in problems. Would someone with GD please tell me how to resolve the terrible investment I've made in this camper!!