Default [Q] Jb leak 3 Network/Radio's problem. Help Please!!

After flashing Jb leak 3 last week, i am facing wifi/3g radio issues.

My network has got really unstable, and it keeps on fluctuating. After some random time, my network sort of hangs and i have to enable flight mode/restart to get network again.
Wifi also has got really very bad. I get less than half the normal speed i used to get before.

Is there a fix for this? I really love jb leak. Its clean and fast.
Can i flash radio.img of my previous rom on jb leak?

My phone: MB865 Indian version. ME865 after jb leak 3.