I may be wrong, maybe it's the RB25DET side feed Vs top feed on DE and same impedence.
If you really think they are blocked, try squirting metho or petrol down them with a used syringe. You will fing out soon enough if it's a blockage or not.
Maybe someone can throw some light on a little matter of injector size???
If you change from say 270cc to 370cc injectors, that's from VL to FJ isn't it just the duty cycle that will come down. If your Microtech is tuned to run with 270cc injectors, why is it now going to supply more fuel because the injectors have got bigger????
D