Some of my components do use that twist on connection but for the others that don't I found little plastic inexpensive handles at Home Depot that are shaped like a sort of long U or upside down goal post that were the perfect height to lay the fat heavy PC on. I placed little plastic stick on furniture protectors (little dots) under the legs of the plastic handles as not to do any damage to the Zoethecus rack and amp stand. It worked very well and looks like it was made for such a thing.. It relieved all the stress off the IEC and cable... I don't know about at the wall outlet.. I wasn't so concerned with that but I do occassionaly have to push the male connector back into the socket.. Those after market cables and cords can do much harm sometimes.. Always use common sense when trying an improvment that seems unorthdox,,, Like a 20LB 3 inch thick power cord. Same applies for adapters and bananna plugs (the WBT uses a strain relieve while many home brew types think of no such thing and end up damageing your Binding Post),,, thick heavy ICs... Got to use comon sense and don't take all for granted that your not going to get long term damage using many after market products... Points and spikes can do damage if not cafeful.. Use common sense... Bad enough to spend 300 on a tweek of the week but to have it damage your 3000 component is ridiculous.
