Well we tried a new reman oem motorcraft injector from injectorsdirect.com and it still leaked when we did the air test. Also installed all the new o-rings you sent me for the nipple cups and used one of the new bostech nipple cups for that injector. So everything is new and it still leaks. I move the brand new injector over a cylinder and the leak moves with it. Also tried 3 different hold down bolts but no change. So were gonna put all the leaky sounding injectors on driver side (there's three) and put the cab back on and get it running and see what happens because at this point there is nothing else to replace or change.