Volume Punch Thru 993 assigns every other mode perfectly, but CBL volume remains blank. Copy one key to another doesn't work either.
edit: I received some help. Something programmed onto the keys were taking priority. This is what worked:
Clear a Button's Customization
TAP the device, (TV, VCR, CABLE, etc.), button - RELEASE
PRESS and HOLD the SETUP button until the red LED flashes twice, then RELEASE.
TAP 9 - 9 - 4
TAP the button you want to clear twice. - Two blinks.
I performed these same steps with code 9 - 7 - 6 to remove learned functions as well.