Nec wrote:The first picture was a G&G m4, running stock and never opened before that picture was taken. It had less than 12,000 rounds on a 11.1v lipo. I don’t see how that gear was improperly shimmed; the grease pattern is just inconsistent. Interestingly the bevel gear did not have any broken teeth; this leads me to believe the spur gear was poorly made.
Usually when you see the swirling grease pattern on the top of the spur gear it means the sector gear is rubbing against it, pointing to either inconsistencies or shimming problems, at least in my experience *shrug
