First I do not believe they still make brand new injectors for the W124 check your paperwork you will likely find there rebuilt. I have found many injectors for W116, W123 and that just pee right out of the box my best estimate is around 9 present. While your engine will likely run Smoother with injectors that pee it can wash the oil off your cylinder walls and thin the oil. IF they just pee you can return them or try to rotate the pintail a little to fix them it can take a couple of tries or be such a pain to find the sweet spot that you pull your hair out trying.
Dave S