Some more testing here.
TPS baseline (motor off):
.53V; 0% TO in DM
Screwed in TB stop screw
.55V; still 0% TO
Screwed in to .57V; TO still @ 0%
.59V; still 0% TO
TPS bouncing from .59V - .61V; TO% bouncing from 0% - .4%
THIS IS .06 - .08 INCREASE, BEFORE TO% SHOWS OPENING. NO MANIFESTATIONS OF A PROBLEM ARE APPARENT AT THIS POINT, WHEN RUNNING. 
.61V steady; .4% TO steady
.61V - .63V TPS = .4% - 1.2% TO
.63V = 1.2% TO steady both ends
.63 - .64; 1.2 - 1.6% TO
.64V TPS = 1.6% TO; steady both ends. This is where the idle swing begins, usually about 100 RPM's.
.64V - .66V; still steady 1.6% TO
SLIGHT more turn gives .64V - .66V; TO% bouncing from 1.6% - 2.4%. This is where more pronounced idle swing starts - about 350 RPM's.
.66V steady; 2.4% TO steady.
.66V - .68V; 2.4 - 2.7% TO
.68V steady; 2.7% TO steady. She won't hold 2.7% TO while running.
.68V - .7V; 2.7% - 3.1% TO
.7V steady; 3.1% TO steady
.7 - .72V; 3.1 - 3.9% TO
And the throttle stop screw is pegged. Not to worry; another @ hand 1/4" longer...