I only stole tried-and-true techniques used to linearize FR from 'stat speakers. The Orpheus pads which I am using help with comfort and soundstage too.
I promised not to post these until someone I knew was able to get his hands on them. But at this point, I don't think anyone is going to sell these anymore. The modded Jades are reminiscent of the HE90s. There is a reason why I don't have the 009s even though I can afford them.
Hopefully, if we can generator enough buzz, HiFiMan may figure out a way to bring them back. I'll post a petition on HF unless one of you guys do it on my behalf.
The build quality is abysmal though. My pair is held together with glue and screws. I will eventually transplant the drivers to new cups of my own construction.