I see that Rock Auto has them for $65.89/each - not bad.
I finally got back to my 914 after 15 months of Covid avoidance. Started it up and let it idle for 10 mins specifically to look for stuff like this and sure enough, one of the injectors was leaking.
Luckily, I borrowed an extra from a friend nearby but he wants to keep them for backups - understandable for sure. Put his in and it's dry as a bone - confirming it's the injector itself.
I should just go with the FJ67's from Rock and replace all four while I'm in there and ship my old ones off for rebuilding and keep what comes back for backups...right?