When listening back to the AAC file of Dead Souls I noticed some distortion in Bernard's guitar line at those points where he goes up high on the neck (first time at :49). I thought it may have been the conversion process, or that the FLAC file had a mastering flaw. I asked our friend who is doing the mastering and he pointed out that it's always been there.
Sure enough, I went back to my Factory LP copies of Still and Substance, along with all the subsequent CD issues. It would appear that Martin Hannett recorded the guitar a little too hot, and it's part of the master recording. I'd never noticed before.
That's how good these remasters sound. ;)