Yes, I wouldn't be aware of what Ashley was doing in detail from late 84 onwards. I seem to remember he wanted an eq with some upper mid punch for live slap bass projection which is why I did those but I'm not sure how successful they were, a bit esoteric.
I have visited Tangshan, on two occasions plus the surrounding areas, some of her relatives are in Tangshan, others in Zunhua, Beijing and Shijiazhuang and her elderly parents live in a small country village outside Zunhua called Yuyingfancun. We laid flowers at the Tangshan earthquake memorial site which has an avenue of large stone tablets with inscriptions of the names of those who perished. We hope to go again next summer.
My wife remembers the earthquake. At the time she was with her grandmother and parents near Zunhua. She was a young girl then and remembers her grandmother grabbing her from bed and running outside the house thinking a war had started or something. The earthquake was so powerful it was felt fairly strongly in that area too which is @ 90 minutes drive north of Tangshan.