You might check out the Vampire posts-they sell two sizes; my advice would be to stick to the smaller ones if they are a fit. A pair can be had for about $25. I recently changed out the posts (in about 15 minutes with no soldering) on my older Audiolab 8000A with good results. Nicer posts to work with, but better sound as well. I'm not familiar, though, with the posts on your Arcam.
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