Hi, after 2 sets of second hand injectors i am still getting a compensation imbalance, what can i do to fix this...

It's pretty normal for there to be some injector imbalance. The figures shown are the compensation values, which the EDC applies to maintain an even idle speed.
Above idle, the compensation stops, as once the engine exceeds a set fuel flow requirement, injector balance isn't nearly so important.

If it starts and runs as it should, then I'd not be worrying about a few milligrams of fuel variance at idle.