you may want to try felt pads at BB&B. There cheap and should protect without leaving any unnecessary marks.
stacking components without leaving marks
as we all can see on audiogon, this is not as easy as it first appears. has anyone found a good solution (DIY or commercial) that can go under the feet of a component LONG TERM that can allow it to be safely stacked on another component? something that wont scratch or discolor the bottom component?