My cf caps came in today the cf looked fine but they didn't fit right specifically the blade area was a tad to snug top to bottom to sit right. I could of dremelled it out a bit and got them to work but didn't. After putting the oem back on I'll just snag some oem caps much easier and on the mirror any imperfections will be bothersome as you see it everyday.
These were the ebay ones I tried.
https://www.ebay.com/itm/224950100707