Torotor

04 6spd GT 125km. After some thorough searching I've come to the conclusion that one or more of my fuel injectors is sticking open when I shut the car off and causing a flooded condition when my 8 has been sitting for a while. I can get it started by clearing the chamber by turning it over with the gas fully depressed for about 10 seconds and then firing it up but I don't want to keep doing this because the oil film is washed away. When it does start it has a rough idle with a misfire for a little bit then smooths out and is fine after that. No trouble hot starting. BHR ingnition was installed last year including plugs last November and wires. Starter is less than a year old and is the upgraded version. Gas is 91.
So, I tried this question in the "sticky" but I've got the week off of work and I would really like an answer soon. How do I determine the faulty injector(s) and how would I go about cleaning them? I would assume that the 8$ cleaner isn't going to cut it here. Also are the tips serviceable or am I going to have to replace the injector no matter what? I'm thinking that it might be possible to pull the fuel rail with injectors and prime the fuel pump to see if one is leaking. Can this be done? Thanks for your time

Torotor

Forgot to mention that I have the Walbro 255 lph fuel pump that's been installed for 6 months. If that helps at all.