CM2350 fuel rail issue

[ktblogistics]

have replaced pressure relieve valve , inspected the high pressure pump (rollers looked like new) ,no trim codes on injectors so might be aftermarket ones

so i run a fuel system test pressure goes up to around 15k when relieve valve opens up and pressure drops a little and goes up to 29k

no trim code on insite also
picture of injector is OEM

when you do a leak test and pressure goes up engine or pump starts to give you a little noise (assume works harder) at about 25k at this truck it starts to make noise at about 17k
any clues what i could test here
as stated before it drops from 29k to 150psi within less than 20sec