[Three_Fingers]

Overly high fuel pressure will seldom cause an injector to leak.
I've run them up to 80 psi without so much as a drop.
Take them out and hang just the ends, one at a time in a cheap ultrasonic jewelry cleaner filled with fuel injector cleaner for awhile-you'd be surprised at the crud that falls out.
Then put 'em back with new o-rings and yer all set.
New O-rings will only cure external leaks-ya need to clean 'em to stop the internal leaks.