I’ve got some questions, but really don’t have any answers for you.
You state that you have diesel dilution in the oil because of its characteristics, but you do not state that you are making oil ( that the level is increasing). In order for an engine with this much oil capacity to reach a state of observable dilution, the oil level would become WAY overfull. You also don’t mention having the oil analyzed. Lacking either of these, I respectfully question your diagnosis.
How much have you driven since the injector swap?
I have no experience changing injectors, but I do spend a fair amount of time reading threads, so take it for what it’s worth… Not much. It seems most users consider cranking the engine with the glow plugs removed to be step #3 of clearing out the cylinders, to be performed after vacuum pumping, then rolling the engine over by hand 2 revolutions. I do suspect that failure to do all the above only raises the risk of damage somewhat, but I have no idea to what level.