That's a real possibility. Although its 60 dbu contour extends west of Kilgore, it seems the Dallas station seems to encroach on it. Any way you slice it, it is a "challenged" frequency. You need something better than an $11.95 radio from the drug store.
Not me, I was thinking of the elderly and poor people who couldn't afford a good radio.

I have quite a few good boom boxes and a 100w Optimus Receiver (that I bought in the late 80's when Radio Shack still made decent stereo gear) that can lock in 100.3 just fine.

I'm glad you can get it OK, but I am concerned for people who are used to getting it on their cheap radio in Kilgore. There really isn't a good answer. We are getting phone calls and emails from Marshall, Carthage and Henderson who can now get us with no problem. I guess you have to take the good with the bad, but Kilgore has been very supportive of the LPFM. Perhaps people who have trouble with 100.3 will enjoy the new format on 105.3.
Incidentally, the call letter swap became effective about 5:00 PM today. 100.3 is now "KZQX-FM." 104.7 is now "KXAL-LP."