Would MR 550 for Doubles care to produce a video of that lift. He seems to be so caught up in others producing a truth detector, than he should lead by visual example. Setting his own high standard for the rest of us to follow. And not a pic of the reflection of the Philsbury Doughboy wearing a skirt.
If MR 550 for Doubles would invest in some heavy planks for better footing and adjustment he would not have to use those 45's. Or he could place a few planks on the floor,under the BB to be lifted, to raise it to the height he wanted. Most PR's I have seen have the pin settings (holes) start about a foot to a foot and a half from the bottom postion. No reason to start any lower.
If MR 550 for Doubles would ever visit a heavy duty gym he may get an idea of how to use lifting equipment the correct way. Good Luck.