You can locate the TPS and its two Torx fasteners on the top of the right throttle body?
With your breakout harness installed, and ALL of the right side linkage and right side idle stop screw, and fast idle linkage released, you can loosen and very carefully rotate the TPS watching the millivoltage. I use a tiny hammer or the T-handle of a hex drive wrench to bump the TPS. As you tighten it, the reading changes, so you'll have to fuss about with it until it settles at the 150mV.
Reattach everything and set the idle using the left throttle stop screw (either looking at TPS voltage (.525mV +) or use guzzidiag in degrees opening (3.6ยบ as I recall).
This is just a portion of the total tune-up, does this help?
kinda helps but how does idle magically come good without balancing left and right. Hasn't balance gone when backing off everything on the right