Default galaxy note 2 (n7105t) regually loosing root

hi all,
for some reason in the last 3 days, my note2 is regually loosing root. and i have to boot into recovery and run the update su patch to get it back

specs are
N7105T
baseband n7105tdvuemk3
kernal version 3.0.31-2138564
buid jss15jn7105tdvuemk2
stock 4.3 with knox removed
se linux permissive <- when i loose root it changes to enforcing


ive got pac-rom ready to install as i test, but just wanted to clarify what the issue may be first
DEVICES
GALAXY NOTE 2 N7105T
GALAXY S I9000
MOTOROLA XTS4000
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WANTED DEVICES
GALAXY NEXUS
NEXUS 5,7,10
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Remember to hit THANKS if i have helped you
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