OK, I've finally had some freetime to work on this again, now I've swapped the fuel injector from cylinder 1 to cylinder 3, the misfire did not follow unfortunately. I think I'm out of easy fix options, is there anything I haven't tried yet that you folks can think of?
Edit: I will check for a vacuum leak again and see if that might be it, but I'm running out of faith and am afraid it may be a bad cylinder