Balk Questions

[LakeErieUmp]

I have two balk questions I'd like the experienced umpires (not the disgruntled coaches) to help me out on. The first is one of my weaknesses, the second is something I am beginning to see more often.

(1) OBR 8.05 and comment address the step-and-fake to third then wheel, step, and throw to first (B3 and B1 or bases loaded). The comment states that a fake then a quick wheel AND STEP to first a balk because it is "practically impossible to step directly toward first base before the throw to first base". I don't know that I've ever balked a pitcher on the fake-third throw-first play. Is there something I'm missing?

(2) More and more recently, particularly in the U15s and U13s, is a pitcher taking the set position then sliding his pivot foot to the left (using a righty as example) much in the way a pitcher will begin his windup before lifting his left leg to begin his delivery. It seems that technically it is a balk or an illegal pitch but does anyone call it?

Thanks!

p.s. - please keep this a no-trolls zone