No real tricks, just a little time consuming getting everything out of the way to get to the injectors. (2-3hrs) After you get the injectors out lock them in a vice but be carefull were you clamp down, you dont want to damage the shaft or collar that goes into the heads also be carefull not to damage the plastic connectors. Use a deep well socket and breaker bar or TRQ wrench to loosen the end cap but do not remove yet. Take the injector over to a clean bench area with maybe a small towel or similar to work over and dissasemble. Its really pretty simple but there is a small puck inside that is easy to loose or misplace "Hence" working above a clean area
I would suggest using a paint marker and numbering the injector bodies so you can re-install them in the same cylinders, its not mandatory and I did not but in hind sight it takes an extra couple minutes and is one less thing to worry about...
