My house was built in 1940 and has the original hardwood flooring under the carpet in my game room. I'm maxed out with 2 pins, 9 arcade cabinets, plus a couch, glass display case, and my big office desk in the connected side room. Recently noticed the floor squeaking in places it never did before. Planning to somehow add at least one more pin and a dedicated MK1 cabinet this weekend. Hadn't really thought about the amount of weight on the flooring... I wonder if I should be more concerned about it?