"carbon from 8-9 years ago wasn't quite the material it is now due to manufacturing techniques etc."

I quote Spartacus... “It’s so stupid I’m speechless.”

My Aegis carbon rides the same as it did 14 years ago. Carbon has no fatigue life. Manufacturing processes have changed how? Kestrel built the first carbon fork in 87 or 88.

Your fork is structurally sound. You will see no improvement over a Time fork.