Is the needle supposed to just come right out of the nozzle? All the tutorials are a little vague regarding handling the needle and nozzle.

I took the known problem one apart and tugging with the shaft of needle that is on the inside with pliers it doesn't come out. I disassembled a second injector and it does the same.

I am afraid to put any more tugging pressure till I know what I am dealing with here or if it is ok to grab that.

After reading around a bit it sounds like taking the needle out of the nozzle is bad to do anyway.

So, what should I do here?

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84 300SD 274K
38K miles on flatplate heat exchanger and various diesel/veg blends. prior to that 4K miles on unheated veggie blends with kero and DinoD.