Good morning to you as well.
I do also machine metal but that is not why I bought them.
I also bought the three pack kit from Elair (I believe they were 1/4-1/8-3/16) but the bits would get stuck in the collets and I would have to use some side cutters to grip the collet and tap them out with a hammer.
I inspected the router for damage (none found) I also checked the bits for burrs (none found) but when I installed the presision collets on the same bits in the same router no more sticking in the router.
So I can only come the conclusion that it was not the bits or the router that was causing this issue it was the stock style collets. what I want to point out to the new users is that with the higher quiltity nuts and collets that you not only get better performance but I would have saved money by just getting them first.
kinda like the users that bought the 1/4 to 1/8 adapter that they have so much trouble with. not that it will not work and some users experience no problems with them, but they are not a good solution and they are even cheaper than the Elair collets but no one recommends them as you get what you pay for.
link to cheap collet adapter https://www.inventables.com/technologies/collet-adapter