[Request] ASUS X99-WS/IPMI PCIe Slot Bifurcation

[oksymoronpl]

Hello,

I am a happy owner of ASUS X99-WS/IPMI motherboard in my home server however I am in dire need of a more NVMe storage. What I would like to have in the end is a PCIe x16 Slot bifurcated into x4x4x4x4 configuration, which from what I read is possible. I am however not skilled enough to modify BIOS to get such result. I do have a 40-lane Xeon installed.

I offer a $20 bounty for two modded BIOS files:
1) $10 for a mod that will change my PCIe x16 Slot 2 and slot 3 from x16 to x4x4x4x4, or a BIOS that will allow me to change the bifurcation parameters myself, whatever is easier and possible.
2) $10 for a mod that will change my PCIe x16 slots 4 and 5 from x8 to x4x4, or a BIOS that will allow me to change the bifurcation parameters myself, whatever is easier and possible. Considering that I have 3 PCIe cards installed at the moment, and bifurcation would allow me to install another two x2 NVMe cards in the system this will be probably the way to go.

If need be, M.2 slot that is present on the motherboard can be turned off however from what I gathered, this M.2 slot is connected to PCH rather than CPU so it should not matter(?)

Below you will find a PCIe Layout diagram taken from the motherboard User Guide and a link to BIOS file from ASUS website.
I hope someone skilled will find this post and help the man in need. Thank you.

Bios file: https://dlcdnets.asus.com/pub/ASUS/mb/So...99-WS/IPMI