I would do that. My problem is that I cannot prove anything to the dealer to fix it. Misfires are recorded in OBD monitors on the same bank of cylinders that independent engine mechanic measured injectors being out of spec. There are still no trouble codes anywhere in the system on that. I suspect 11-15 misfires is not enough to trigger any DTCs. The fallacy of this situation that GM and dealer won't admit that there is a rough idle problem until there is code recorded even then there is no guarantee that they would accept it. At this point I am not sure what I need to do, if I show this misfires to the dealer, they will say "within spec", "incorrectly measured", "consumer OBD scanners are not acceptable", "you (me in this case) are an idiot and do not know how to interpret misfires", "no codes - no problem", etc.