All main breakers will blow sometimes when you turn them back on. How could they set the panels up wrong? My brother is an electrian and my electrian has worked for me for 37 years. Both of them say the same thing and niether would do me any harm. Breakers just get weaker over the years and they blow sometimes when they are flipped on and off. Sometimes they go bad without being flipped on. Small breakers are not to costly but a main breaker will cost more then the panel box. That is why I never turn off the main breaker. Al and Brian do know their stuff but I suspect you are an expert as I am in my field. Experts can give an unbiased report so that is why I thought you would do a good job.
Two ponds, 13 and 15 acres on the Mattaponi River.
