Hi folks! Looking for some help on an unusual request.

I bought a di2 105 kit from FB marketplace, which was purchased from Aliexpress. I'm unfortunately missing a few screws and needing replacements -- looking for help on this.

Here's what I need:
 

• One 38mm caliper mounting screw B
• One 35mm caliper mounting screw B2
• Two caliper mounting screw As (15mm)
• One retaining clip]
  

Where do I get these? Aliexpress? Is there a specific place I can find 38mm bolts?

Sorry for the silly questions.. Thank you!

Anyone else seeing extended shipping times?

• June 26- told shipping estimate was mid-July to early August


• July 5 - order placed


• July 6 told 2-4 weeks frame construction, 2-4 weeks painting


• September 3 - told decals are under development and painting will start "afterwards"

They offered two bottle cages, which seems not amazing for the delays..