There was another Solution

So, two years later I guess I should post the solution. Its the rogue cable technician to the rescue.

First and foremost, he found the splitter in the house. The cable guys or contractors who built the townhomes put the "splitter" in the wall and didn't make it accessible. After this technician did what every other technician did (i.e. check all other output wall mounts to see if splitter behind it, climb into attic, check utility closet) he went a step further and traced every line, cut into the wall in the utility room and pulled the cable line until, vualay, out pops a splitter! He grabbed that splitter, added an electronic booster too it and plugged the booster into an outlet.

He didn't charge me a dime for any of the parts, apologized for everyone elses unwillingness to search for the missing splitter and explained that with performance guidelines, the risk of damaging the home, and tight appointment schedules, it really limits the technicians willingness to truly troubleshoot. He said everyone of the technicians should have realized there was a problem with the different readings from outside to inside and they should know there was a missing splitter in the walls.

So thank you to the guy who endangered his own performance matrix to make a customer happy. I don't have a lot of good to say about Comcast Cable, but I assure you that he made me a happy customer.