Good morning
@Shaggy, does your RAW rifle have 20MOA forward inclination included in the scope rail?
...checking the RAW website it does mention 20MOA...
So I would have
expected regular 0MOA mounts to be fine
(not sure why it specifies "+20", when forward inclination should technically be "-20 MOA"?)
I suggest you mount your ZT4K with a pair of
EagleVisionCam Infinity adjustable mounts 
, which are available with wee two-slot Pic' accessory rails, to allow you to also mount your IR illuminator, without needing to use the scope tube, if you prefer.
(here shown is the full kit, including optional 25mm tube adapters, dovetail-Picatinny rail adapters and a bubble to prevent canting).
(Here the Pic' accessory rails are shown side-mounted, on a Hawke glass scope, but
any/all digital scopes have far less adjustment than glass scopes, so 20MOA is essential to use them on
most air rifles, due to the loopy trajectory).
I'm currently reviewing the
HW 100X BP, and the
Thermtec IBEX 335L scope (with LRF), so I'm naturally using my EagleVisionCam adjustable mounts for testing.
Cheers. Russ