yup - mine is rooted fine- use the CLK-KF3 root file though - not the one you were using for KE7 
i simply flashed the new OS, then flashed the CLK-KF3 file. I didn't bother re-flashing the stock kernel as the Yellow triangle doesn't bother me.

i simply flashed the new OS, then flashed the CLK-KF3 file. I didn't bother re-flashing the stock kernel as the Yellow triangle doesn't bother me.