Urgent Acrylic Warp - How Much Is Acceptable???

LOL!
I really need to crop my pictures....one time I took a picture of a new manifold in my living room and posted it on a Corvette form, part of my reef was in the back ground, everyone wanted to see my tank more than my manifold....
It's an 82 and formally known as the Money Pit... I'm finished with much of the restore and expense for the car and had to find something else to spend my time and money on and here I am! ;D