I tried posting this on the support forum but as of yet had no response.
I have built a new quad and run 3.1 using V configuration and having a problem with the quad climbing rapidly in drift mode.
The quad is very stable in stabilize, loiter & alt hold. In fact in alt hold and loiter I get no up or down movement and can hover at one altitude for a whole battery if I want.
As soon as I go into drift mode and start moving the quad starts climbing quite fast and I have to back the throttle right down to bring it back down.
I have included a log.
Any ideas what I am missing.