So I'm looking to replace my cnc gimbal with the Walkera G2, anyone using this combination? if so, how's the performance? The CNC gimbal pretty much sucks and i'd like to not pay $200+ for a decent one. my flight time has dropped from 12+min to a bit over 5 with the stock battery(using CNC gimbal). Replacing that with the multistar4000, hoping to @ least get back to 12 maybe 15 with the Walkera. Also what about using a separate battery for the gimbal?