Hello everyone!

I was wondering if any of you have ordered the Bronze valve guide kit from conceptzperformance? (https://conceptzperformance.com/ferrea- ... _12980.php)
I did long time ago, and installed them some months ago. My machine shop started to work on the heads today only to realize that the inner diameter of the guide is 6,040 mm instead of 6,000 - 6,018 mm which it says to be the standard in the FSM.
If i use OEM valves there is a gap of ~0,080 mm which is a lot more than what the limit is according to the manual.

What do you think is this okay or are they faulty?
Or are the new valve guides supposed to only be used with new aftermarket valves that have lager diameter?

Thanks!