Because this is "advanced" kata :) and, quoting, 'the standard does not specify how long that "time unit" is'.

Also, quoting, 'if you have trouble discerning if the particular sequence of 1's is a dot or a dash, assume it's a dot'.

Could you please read the kata description? :)

This error has already been told to CW a lot of times. I fixed it again. Could you tell me if it works?
Thanks for your post.