This is like watching Ground Hog Day.
I will give you a link to a thread that is not unlike what has happened here to the OP. Pulling coil packs and plugs tips/short cuts - Lightning Forum | LightningRodder.com
You can read the whole thing, but if you start out at about post #68 it will save you some reading...lol. I am sure a few might say I am bashing (the vendor) by posting this link up. I am only pointing you guys to a thread and you can make your own conclusion.
To the OP, good luck on getting your tuning issues resolved.
I read all the 18 pages and that reinforced my previous thoughts. JJ thinks he is a perfectionist but only in his own mind. He just can face the truth that he actually made mistakes in both situations. Both threads are actually similar. He blames everyone and everything but himself. This will affect his business in a long run. JJ if you are reading this, it's OK to be wrong and admit it. Just learn from the mistake and make sure it never happens again. That's how people trust you and respect you. Good luck, man!