Bluegrassboy75,
I'd believe DIRT.
There's two choices, either keep your WA setup and add a wing dish pointed to 61.5 to get KAIT and AETN in HD or get an EA setup.
I don't know if you have the choice or if it's up to the installer.
The Memphis SD channels are on 61.5 transponder 18 spotbeam 63 too, you won't lose them. I'm getting them, they are in 16X9 SD, black bars all around.
I don't find KAIT or AETN in SD on EA, but then again not needed with them in HD. Also 217 ION west isn't on EA.