uneven stand

Hi All, Hoping to get everyones input on how I can resolve this wobble issue with my tank. I just recently setup my new 100g, but noticed when walking heavily/jumping near it it wobbles very easily. I'll post a video down below of just pushing it lightly and it wobbles. I don't remember the...

I have an aquarium rack that has wire shelves instead of boards and even though is rated 1000 pounds a shelf the wire platform is now warped a bit in the middle. Most of the tank is in contact with the shelf besides the gaps inbetween the wire. Does this matter if the tank has a rim?

I built a tank stand 3'x 2' x 2' - the stand top is flat, no decorating trim. Tank is a rimless tank - about 70Gallon The top is a bit uneven, - I think the board that I used for the top was not even. I did bought the self-leveling mat from Innovative Marine-...