Hi, Ive been having some issues with the gearbox in my dboys ak not being powered by my battery (eg: battery wont work on my gun but works fine in others). I was wondering if anyone could recommend a good top wired v3 gearbox I could drop in as a replacement for the dboys one currently driving me insane? I used to own a cyma ak and was thinking maybe one of their gearboxes, later sold the gun to a friend and its still workin like the day it came out of the box but apparently cyma is hit and miss this way so Im reluctant to order a cyma gearbox and get a lemon this time

. Something under $150 is best.