Sure, try to lower camera gain. The PEMPro screen shots you posted show that the star it was using was at or very close to 32767 adu value. The fact that it didn't vary much between exposures is a good sign the star was saturating the sensor. When doing captures, try to keep these values closer to 20,000 and make sure the values vary between exposures, even if only by few adu's:
Paul Kanevsky