If you are competent at all with that caliper, I don't see how you could be off by more than .010(meaning the installed height is about 1.825)......... and yet it sounds like you still think when you try that new height mic the number is gonna come up around 1.880.

I guess we'll see who is doing the better job here.
If the height mic shows something close to 1.825 you did a good job, and the head assembler didn't.

If the number is closer to 1.880, then the head assembler did a good job, and you didn't.