sr20det rich idle. input please

[max20s14]

fuel specs: 550cc rc injectors
adjustable FPR
walboro 255lph
AEM wideband o2
When i start the car the AFRs with immediately say 14.7 then quickly drop to around 10.4. when cursing it will be in the mid 13s to high 12s when normally it will be about 14.5.
it started after i found a fuel leak coming from the bottom of my FPR bc the fitting was loose, so i tightened the fitting on the bottom and no more leak. two weeks before that leak, my fuel rail had come loose and broke 2 orings on the top of my injectors which i replaced and tightened the fuel rail back down and no more leak there either.. It ran fine before.
i dont have a fuel pressure gauge so i havent tested it yet but would you guys think the FPR leaking could have thrown the fuel pressure out of wack?
it doent seem like a leaking injecter bc the car still runs and idles fine aside from being rich.
what are the most likely culprits?
vaccume leak?
MAF?
FPR?
injecters?
idk where to start

[compactfean]

I've seen fprs leak fuel into the vacuum line. Also, anything minor you fix in a furl system, I'm sure will raise the pressure.

[max20s14]

even if its a fairly new FPR? i noticed my afr will go back to normal then start fluctuating back and forth slowly to from rich to normal