For my own legato practice I broke down some of his showcasing legato lines into easily digestable patterns, for practicing.
For example, in the song Memories, there's some great 'classic' Satch legato patterns that are sort of simplified in form already, which is great to practice off of. The whole solo in that song is very proper and 'polished', unlike the very improv-ed Lords of Karma solo that has tons of little quirks and that sort of thing that can never really be properly played just from a tab. But ANYWAYS - looking at some songs like that... I forget which others. Perhaps Flying in a Blue Dream, Borg sex, Hill Groove, Gnaah? If someone has some good ones that I can't remember, psot 'em...anwyays, I came up with a bunch of patterns copying from it, like this

And of course, rinse and repeat, with different fingerings (ie. 1-3-4, 1-2-4), different places on the fret board...etc. But that's just one of them that could be wrought from his Legato phrasing bank (as far as we know it :) ).
The way to go about it is to not just copy the solo directly, it's to break it down and then build it back up again, so you can actually play the solo comfortably - without having to worry about having the 27th note of the lick not lasting exactly a dotted 16th note within the 12:8 grouping as it says in the tab, or something. Not that you have that problem, but I sure did!