Default flash fail

hey all, not really sure how to look this up so im posting hopefully i can get some help

trying to flash a new rom on my t989
was previously running hellkat 4.4, i tried to flash over carbon rom , made sure to wipe everything necessary beforehand

i noticed the install went a little "too" quickly while flashing the rom. sure enough after reboot, i get the samsung logo but the screen stays black

im able to boot up in recov, so i try a different rom, cm11. made sure to wipe
once again the progress bar just flies across and its "done" in 2 seconds only to produce the same previous result

the only rom it installs properly is hellkat. ive got CWM 6.0.4.3 and my radio is up to date as well.

any ideas?