lvl10 parts

[DanMan]

if a used valve comes with lvl10 but not all the tuning parts is this a problem if you are putting it into different gun?

[Smoothice]

Eventually it will be a problem.

When the carrier oring starts to wear it will begin to leak. This is when you would want all the carriers. If you had the next smaller carrier you could just pull out the oring and put it in the smaller carrier. Leak fixed.

Once the carrier oring is too worn to use any more then you will need a new one. This new one will probably only fit one of the larger carriers.

So my answer is yes having the extra carriers is nice to have.