Went to the local shop that caters to quad copter enthusiasts, this afternoon. During a conversation about some electronic parts for a project on my quad, I asked about how to slow down (add simulated inertia) the hair trigger responses that I've noticed with what are referred to as "toy grade" quads, even the largest ones like the Syma X8 variants. I was told that this is a function of their being so lightweight, and that even with converting from brushed to brushless motors won't make it go away, but just introduce lag in the same lightning-quick responses to changes in throttle settings. The guy I spoke to is an authorized service technician for the wellknown brands, and suggested adding weight. I've already upgraded to the largest battery that will fit inside, along with replacing the tiny sheet metal screws that the landing struts were attached with (inadequately at that), with larger machine screws, flat and lock washers, and nuts, from a hardware store. The weight gain seemed minimal, and showed unnoticeable change in throttle reaction. Does anybody have any suggestion on how they've dealt with this issue on lightweight quads? How much weight was successfully added? Any electronic means of slowing down the reaction tried and successful? A combination of both?