DT SWISS 1800C Spline converting from 142-12mm to 135-10mm thru bolt.

Guys, help in this matter will be appreciated.

I'm building up my AWOL 2016 model and bought new wheels and front fork. With front wheel i have no issue, but the back became a small problem.

Those are the wheels i bought: DT Swiss C 1800 SPLINE db 23 - Wheelset - Clincher - Centerlock / IS - FW: 12/15x100mm / QR | RW: 12x142mm / QR - 2019

I want to convert them to 135x10mm through bolt and not axle, as my frame doesn't support it. I've mailed to DT Swiss and they advised me to buy those parts:

Caps: DT Swiss Conversion Kit for 240s/350 RW Disc Brake to 10x135mm Thru Bolt - HWGXXX0006560S

Thru bolt: DT SWISS Quickrelease RW RWS Thru Bolt TA10 135x10 mm

All looked good till i got them. The main issue is that caps look like that but in 10mm version: DT Swiss Conversion Kit for 180/240s/350 RW Disc Brake to 12x135mm Thru Axle - HWGXXX0003910S

They do not have those, steel ribs (Have no clue how to call them properly) and just look like a standard thru axle end caps.

There is another version of those end caps, like this one: HWGXXX00S3218S

But apparently they won't be compatible with my hub...

It seems that even retailers have a hard time to give a proper advise.

Guys, gals, please help with advise, which caps i need and how to convert that rear wheel to 135x10 mm thru bolt.

Thanks a lot in advance.