From the way the article was written, it sounds like the author was working on a K75.
When I did my 2 bikes IIRC I used cyl #3 as my base because the throttle cable attaches to that butterfly most directly without adjustable linkage in between the butterfly and the cable attachment.
I set my throttle lock and went from there. 3 to 4, then 3 to 2, and finally 3 to 1. After that then the brass screws were adjusted for fine balance and final idle set. All using just my TwinMax.
If I had made any adjustment to #4 I then also checked my TPS settings, and choke settings last.
Like Dr.Duck suggested a little lubrication doesn't hurt, make sure all is freed up.