The t-bar does not fit into the hole. Things do not line up. What should I do?

Please watch this video on how to loosen the lever to loosen the stainless steel piece within your frame to allow your T-bar to slide into the frame:

So far we have been able to resolve the issue (that the t-bar seems not to fit) each time, as the problem is caused by over-tightening the clamp. If it gets stuck, you just need to turn the handle counter-clockwise enough to get the handle moving again.

It will never truly be stuck!