just finished stand and have a problem

[Abbyreefer]

I would say when I push the front left corner down the opposite back right corner goes up 1/8" . I think the tank is slightly twisted. When I use my level on it from side to side its perfectly level. when I use it front to back on the left side its leaning slightly backwards and when I uses it on the right side its leaning slightly forward thats whats causing the tank to sit uneven. crazy cuz its perfectly square. Ok, so then if I take the back left support out and shorten it and lengthen the right front post that shoudl even it all out in theory right ?