C/P/L barrel and link fitting

Hello, All
Reading a lot so far on this. Really like the Schuemann instructions.
Steps so far:
Fit barrel to slide so .020 feeler fits between top of barrel lugs and slide.
Fit barrel, (installed slide), no link, to frame so .015 feeler fits between barrel lugs and slide
(eventually I intend to open this up a little more, Schuemann says .020 but I think this will help during VIS fitting and link fitting)
With #3 or #4 link barrel contacts VIS without unlocking. Also, barrel ramp is about .100 short of mag well, so I need to remove material from the VIS until the barrel links down to .015 clearance. This looks like it will have the added benefit of moving the ramp back to better align with the mag well. At that point I intend to increase the unlinked vertical clearance between the top of the barrel lugs to the slide to the Schuemann recommended .020
Does this make sense, or am I going about it the hard way?