Personally, I think you are brave to operate a Safran / TM engine outside of PBH.
In the past, I have had reasonable success with speaking with a rep and discussing your usage and best options to go forward.
If you are on PBH they will certainly answer the phone when it rings!!!
Getting into the scheme with a fresh starting point is relatively easy. With a runout engine - not so much.
Tried Safran for a second-hand engine? I would start with some dialogue with Safran TM as you may be surprised one way or the other!!