Weepy drivers side rear 17mm fuel line fitting - HELP

Guys,

My apologies for starting a new thread here, but the attention is needed. I’ve just got the car back together after fuel injectors and vac line replacements. Car runs well but the drivers rear 17mm fuel line slip nut fitting is weeping fuel. This is where the fuel line from pump connects to the rail. You can see to image right - it leaks at base of fitting.

https://lh3.googleusercontent.com/3ANOVZde6h302ji8uXtnHg1nOD3BDbCo6LMSQURzUxwNm26R0rvpoNhMaJjLMsecSLo7Ac_nmwq_zhr2yQ4uBILufByarkG9b8WCqzvcGjXRWSwLwDa5gdIPePZZrczcljzplmUv0eso6JVT52z_wUfL2hfE9w5MtxjnNiywZVv87zG79vB6cq0DPwBOL-QDxBcRrNeAEzxiJWk9RSj4rhbf2LoBYmrGF3TJnVmEIwIGMXtjHan3qcHqRsmWBXWCxgCRiv5K80O9Zuey_pktRGox5YHw_LWC2Gam0eUJ_ihhDe4kpybWWATjOuSIlYOS5EAQiSUfVy_Q5_EXr5QJyUsn0MShenVlw1tEFv_ztG8rvKw_KBgsbodNdKZSLgmrmOWHgYWIcp5igcMXva0U2GqoFoHgoTyPTwI8RK5VMOGM0D7Q2fpelp3rR5ysZGMkd16jBnRu7JktqCWOZSHqcTfouQAoJUiuVVOY_JHTzND_HYXRp6DF2MbqG10L1RkDFIpUFTOb8zVY-abBAFOp72wpDm_O9HynPw-b6N3Id_FKmeeOtGy8MpiO1btubOaOvO4VG1UI-e8BkbnFfYnoobG9Tp1zVMvJh2JGKtUOomKv50gph7vU=w1083-h812-no

I’ve gone back and forth tightening the fitting on the fuel pump and the rear slip nut evenly. I find that the rear 17mm fitting won’t sinch down tight past finger tight. If anything a tiny bit with a wrench, so I’m assuming it’s just not seating the end of the fuel line down property into the fitting.

The fitting weeps fuel when the pumps are primed a couple times.

Could the fitting be worn out?

Aside from ordering a new fuel line + fittings anything else I could try?