Welding/Binding Parts Together not working?

Hello! I have created a few structures for my game that are stored in ServerStorage which I clone over into the play area so the players can play the game. Then, the map gets deleted and the next round continues with a different map. During the game, a wave comes and tries to kill the players, while taking down the structure as well.

My problem is, with all the techniques I have been trying, none of them seem to do what I want to it to. Similar to games like Natural Disaster Survival, I want to building pieces to fall off as the building slowly topples over, and well you get the point

After going through many ideas, I came up with settingUniversal as the part surface. The roblox studs would stick together, but I quickly ran into a problem as when cloning from ServerStorage, the parts forget they are stuck together and the entire structure collapses. (This would give the effect that I am looking for, but doesn't work)

So, in other words, I'm asking for advice for how to make a structure collapse similar to Natural Disaster Survival, and a way to fix the problem with parts not "sticking" together when cloned from ServerStorage.

If you need more information, I'll be happy to help. (Sorry that this isn't necessarily a scripting question)