[ossodiseppia]

... I will try changing injectors around. I assume the injector is just the last fitting on the engine block (?)

No, it's not. Remove the hard line at the union I've pointed to in the picture. If you need some injectors, I can probably scrounge some up for you. I can't promise they'll work, though.

Many years ago, I took the ones from my Alfetta to a VW guy for cleaning. You may just go ahead and do that anyway.