I would get a new rack for sure. I had Quadraspire in my old system and I don’t think mine would have done well on a second floor.
I’ve since upgraded to Adona Racks. In your case I would consider the Reference Rack for the TT.
https://www.adonacorporation.com/reference.html
Here’s my set up. There isn’t any movement. The center one is the Reference Rack.