JAYCO AUTHORIZED WARRANTY REPAIR CENTER. When it comes to RV, travel trailer or fifth wheel, we do it all. Stand behind the Westcoast RV LLC Shield. We offer the Best mobile RV service in the Bay area. We accept all extended warranties and insurance claims.We do Jayco wingwall repairs, roofing, air conditioning, wiring, inverters, converters, batteries, basically we do it all. Onan certified!