Good luck to you. I hope you get your trailer back soon and that solves your problem one and for all. Please post any additional info you find and especially your results. Hopefully all good!

Since I have a) Filled the reservoir to the proper level, b) Replaced the stock 50A breaker with a higher quality 80A breaker and C) only operated the slides and/or jacks when plugged into shore power or the running truck, I have not had any more issued on my trailer (knock on wood).

Chris