can't get my 9920 and 9xl setup to work with ubec

[highflier]

Hmmm, are you sure you did not get the 2 jumpers mixed up. Perhaps you should put the jumper on make sure it works with Cogging, Then make only one change and that is to remove the red wire pin on the ESC lead,

I assume that you have 1 side of the UBEC connected to the Main battery, and the other side in reciever (Battery location) and the ESC pluged into the receiver some spot os always.

Highflier