Default 5ghz wifi on uk kitkat firmware

Hi, I have a Chinese GT-N8010 and have successfully flashed the UK Version of KK on it along with the Leaked N8000 KK Bootloader and 8013 Wifi fix.

But I noticed 1 problem, when I was on the original Chinese Firmware(JB4.1.2) I can easily scanned 5GHZ 3 digit Channels(149, 153, 157, 161, 165) and connect to it, but after the upgrade, I no longer able to scanned the 3 Digit channels only able to scanned the double digits channel(36, 40, 44, 48) . Maybe this is a N8000 Limitation. Is there a way to fix this problem? Would flashing the original Chinese Boot.img(JB4.1.2 though) on to it fix this Wifi Problem?

I want to fix this because with the 3 Digit Channels I noticed a longer 5GHZ Range and Higher Speed.