Back when I gave my old SongTowers to him, I made my son swear to never take them apart or modify them. He laughed at me, but agreed. He now knows about sound deadening and large room acoustics, but admits he knows little about designing a passive speaker crossover. Dennis Murphy is still the expert at this.
When he was younger, Andy took everything apart, whether they needed improvement or not. Often he didn't reassemble them for months or years! He actually did repair a few things, but in reality he more often damaged them or lost critical parts. He felt it was his duty to ignore my repeated comment, "If it ain't broke, don't fix it". Just maybe, he's learned that lesson now.