The elastomer o'rings should be replaced every 10 years if its mainly street.
If you are in the states it only costs $75 to overhaul and re-certify SFI .
I'm not so just bought an overhaul kit (~$35) and did it myself.
Fairly basic job, cleanliness and care with orings during assembly is all that is required . Blue loctite on bolts and correct torque.