hey ben!
hope all’s well – i moved your post here, as it felt most applicable.
re: K3 on cranes, the youtube demo was from a very early version. the functions are still there, but a little different.
from the top post:
tap KEY 3 to perform a speed bump on voice 1. hold KEY 3 to produce a more dramatic change. KEY 3’s influence is selectable in the params, under KEY3. ~~ is a small pitch deviation, 0.5 is half-speed, etc.
if you navigate to PARAMETERS, you’ll see a KEY3 option as the second-to-last entry. the options are:
~~: a pitch wiggle
0.5: slow down by half
-1: reverse
1.5: raise a fifth (this is the one shown in the youtube video)
2: double speed
re: parameters/voices, i’m not quite sure what you mean? happy to help with more info, tho!
re: cheat codes, there’s a massive update tomorrow which addresses your question. it’s not a shield thing, it’s a non-grid thing, but it’s corrected in cheat codes 2 
(for what it’s worth, the software capabilities of shield and stock norns are identical for all scripts!)