Trim with naza?

I found a f450 in a farmers field and put up flyers to see who lost it no response so been fixin her up....my question is can I use trims cuz she always wants to drift backwards and I've Try every thing...hard to get GPS to hold but with effort it will...can I use trim to correct this or is it a bad idea?????
 

kloner

Aerial DP
sounds tail heavy

you would want to use the imu calibration part in assistant under tools to cure drifting
 



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