Rebuilding the CAS AFR

[darkfa8]

I have a CAS all-billet AFR. When I goto set my fuel pressure, line-off, my gauge will flutter.

I was wondering if anyone has had their CAS AFR rebuilt by either CAS or if there is a kit I can order to do it myself.

I bought this AFR used some time ago, so for all I know it could stand to be rebuilt.

thanks,