IVR pulse at 4 volts gauges read low

RedFish said
If you believe that bending the little thingy is a suitable method or remnants of the mechanical limiter will not effect a solid state regulators operation, By all means purchase a regulator that has unconditional replacement warranty. This is so the repeated R&R(s) will cost you only your time/labor ( providing you don't break something else in the R&R process ).

Some explanation of what you say would help, Redfish. If the old IVR is out, how can it effect anything? Are you assuming that somehow the heating wire for the old IVR is still in place? (I assume it would be cut or bypassed.) The IVR heating wire is in shunt with all of the gauge circuits, not in series in any way. Hard to see where the wires go in the pix.