Help me Guys topic

hi guys, i have flashed siyah kernel...on my stock rom 4.1.2,,i have to come back to my stock kernel...any way to come back......
any tar file can be flashed via odin to revert to stock ,,,,,,
plz link me to that thread or plz plz upload that stock kernel.tar
getting very less battery backup from siyah kernel ...any ways to improve the battery drain issues