miss/shake

[Lonestar10]

When i set my truck to 1100rpm high idle i get a skip in the motor.

tried doing a cylinder cutout and when cutting out engine it runs on each cylinder and while cutting out 1 cyl at a time it seems to make the same difference in the motor for all 6

ran injector perf. test and it fails injector 3 on test point 1 and injector 6 on test point 3

any ideas? both bad? injectors have about 200k miles on them replaced all 6 when overhaul was done.

fuel pressure leakdown test yields about 500psi of loss over several minutes and pump has been rebuilt before and due for another rebuild soon.