That area is a vortex of defeat where any dreams of BBS go to die.
Not to trivialize your misfortune but this made me laugh out loud. Very well put. Clearly, a great many shavers struggle here so be not dismayed...you're in excellent company.
FWIW, much progress is apparent here. You do seem well on your way towards nailing a comfortable and repeatable experience. Paying close attention is certainly at least half of it and your level of awareness suggests you'll have it sooner rather than later.
As for the burn, the potential causes are numerous. In your case, it may be pressure. It may be the Nacet, the Old Spice, the phase of the moon, ad nauseum. It can be, and often is, a frustratingly opaque situation. As always, the best advice remains changing as few things as possible in order to determine the culprit.
Incidentally, in my personal experience the burn has arisen most often due to:
1) inadequate prep
2) too much blade time (passes, buffing, touch-up)
3) both