Hi Eric
Big fan of your work.
As with Darryl, certainly not a guru but I just went through some stuff I've been collecting while researching getting a Hutech modded camera. Only going to tell you stuff you've probably already been through, but your predicament is an interesting one.
Among others, the two modds you can get from Hutech are the Astro filter or the Clear filter, which did you ask for? From the info I got, the astro passes from around 375 - 710nm and the clear passes from around 350 - 1150nm. When you put the LPSP2 in the path, it should only be passing from around 410 - 695nm.
It would seem feasible that if you had the clear filter modded camera (BCF would indicate that too I guess!

)that the pictures you posted would ring true. No LPSP2 filter your collecting all from 350 - 1150nm and with it your only collecting 410 - 700ish.
Is there any chance of getting you to post a pic with no LPSP2 filter and no custom WB, or with a WB that you would use with one of your older modded cameras (1.38, 1.00, 1.23). Out of curiosity, what is the custom balance recommended for the mod you got with the camera (or what did you use)?
Don't see why you should get to have all the fun!
Good luck mate and enjoy your new camera.
George