A correction, if I may, to LRP's Post #24, the compressor bleed valve closing point is adjusted at a repair/overhaul facility by fitting the appropriate sized nozzle/jet to control the rate of air escaping from the upper side of the diaphragm. This, in turn, determines the point (N1) at which the pressure build-up closes the bleed valve. The nozzle/jet size is a calibrated setting and therefore NOT field-adjustable. There is no "rigging" associated or required with this compressor bleed valve. RVDT's Post #32 mentions the nozzle/jet in Item 4/. But more importantly, take note of his statement, "Something ain't right. Stop and fix it." This is absolutely correct - and please let us all know what you found during the troubleshooting and rectification process.