The CF-201 are standard 5/16" spades, the only issues I've seen are due to binding post plates that have the posts inset inside a cup so they don't stick out past the plane of the speaker wall, there wasn't enough room for the spade's bodies inside the cup. Luckily, I rarely see this kind of post outside of pro audio gear. The FT-211R are the same spades with plastic bodies instead of stainless/carbon. I'd replace binding posts before I'd destroy such expensive spades by squeezing them in to fit crappy non-standard binding posts... the Furutech binding posts are awesome and a perfect fit.
