RockShox spring retainer, please help.

[Liam .]

Hi all, 

I recently bought a coil shock (‘23 superdeluxe ultimate)  used but it didn’t come with the spring retainer and preload collar. I have attached an image circling what I need. I didn’t think it would be much of an issue but it’s becoming an increasing headache since none of my local bike shops seem to have. 

I wanted to ask if anyone has spare (maybe from a blown shock) or if you know where I could get from?

Any help is much appreciated.

Cheers