I don't know who needs to hear this, but if the big steel bolt on your Kitchenaid stand mixer is wiggling out because we've all been baking like whoa for a year, flip it over. There's a set screw underneath that you can tighten to lock it back in place.
Stay tuned for tomorrow's adventure: repacking all the grease in a stand mixer that hasn't been serviced in 11 years.
Critical Update! If the grease in your KitchenAid stand mixer is black and so dense that it holds the imprint of your serial number, it's time to change.