I think it is better to play your version from the score before listening to other players. Watch other players only after you've built up your own interpretation from the score.
Don't forget the dynamics contrasts and the rests, they are also very important in this study.
I finger RH with p,i all the slur parts. I think it generates a nice articulated result together with the speed.
I don't know which videos you've seen at youtube, but if you search there you will find a nice rendition of this piece by the great Tilman Hoppstock and he does all the written slurs.
FIrst decending slur finger 4 to 1, then finger 1 to open string. Then finger 2 fourth fret, to open strings. Hand always in stable 3rd position and using open strings, a very guitaristic effect. The other sequence there is also a pattern: slur finger 4 to 1, then slur finger 1 to open string.
Don't forget the crescendo "molto", then there is a marcato, and there are the subitos, right after the rests and the comma. There is also an important sff and the second time it is sul ponticello, and at the end it is 'secco". So all of them should sound different from each other...
I don't think there are errors at this MS edition. Bar 13 is b-e-e, b-e-e, b-e-e as in the MSed. The error I remember is the total time marked at the end of each piece. I've seen Brouwer saying to a student in a masterclass not to folloow that time. He said it was used for copyright reasons and we shouldn't follow those time indications.