i would contact manufacturer first .bore tech carbon remover works for me
I guess you haven't read the previous posts - I am the manufacturer.

Knotwild, I've tried what you are suggesting using a piece of tubing that the original blast spacer was cut from. 2 on one end and three on the other end came out that way.
I just picked up an expanding pressure test cap for my PVC soaker. So I can now shake the CLR/hot water solution after placing the suppressor and solution in the PVC soaker. I will soak for 30 minutes shaking occasionally AFTER it warms up a little. No hurry, I won't be shooting the suppressor until the groundhogs are out in the spring.