I am having issues with my Arducopter. One of those issues is that if I bring the quad down, when I increase the throttle again, sometimes to max, it is very slow to lift, and sometimes bounces off the ground. I have changed the setting in Mission Planner to allow for more aggressive rates of climb, but that hasn't helped at all - in fact it felt worse. I have read that throttle PIDs rarely need adjusting, so I am at a bit of a loss. I am using a 5000 mAh 3s lipo.
I should add that running auto review of any logs shows thrust fail - something along the lines of the average climb rate being too low for the average throttle input. The input and output seem to follow each other nicely when I look at the logs.
The other issue is Alt Hold (and therefore land). When I put it into either of these modes, the quad starts climbing. Its isn't a particularly fast climb - although the quad won't climb fast anyway. I have mounted the APM on some anti vibration foam, but I haven't been able to get the vibration analysis done yet - is there anything else that could cause this apart from vibration?
Thanks in advance,