Here's a control diagram for the EP/RLA regulators. It provides a great visual explanation of the function of the regulator.
(C) Robert Bosch AG - for educational purposes only
A few (rough) translations might help
Raumnocken = Space Cam
Fliehkraftregler = Flyweight governor
Feder = Spring
Tastrolle = roller follower
Regellstange = Control rack
Gestanghebel = control (throttle) lever
Korretureinflusse = Correction influences (barometric cell and thermostats acting on compensation lever)
A note about the compensation lever (Korrektureinflusse) - the thermostat (not shown) and barometric cell (not shown) act on the opposite ends of the "T" lever (at the top of the image), resulting in a change or "compensation" in the actuation signal transmitted to the rack. +/- some amount depending on the prevailing control conditions. The compensation could take almost any mechanical form that delivers a linear change proportional to the control variable - an example is the replacement of the barometric cell with the boost pressure compensator on the 935 to achieve a turbo combination. I assume that in racing applications, the "temperature" end of the lever is simply held in the fixed "warmed up" position. (see Henry's famous warm up screw mod/enrichment device, or the top of an RSR pump for reference)
Also, note that the spring shown between the flyweights (holding them "together") is analogous to the spring/screw set of the capsule (low speed/ high speed and idle/CO) controlling the linear position of the space cam with changes in shaft speed.
The spring shown pushing the space cam towards the follower is the very light spring behind the space cam - its only purpose is to keep the cam against the governor flyweights.
Again - these are just my observations/interpretations - please don't take them as gospel.