Orginial Radian tuned perfectly now requires lots of up elevator - RC Groups

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Trim it to fly level and then land and place a ruler across the stabiliser/elevator and see if there is excessive up or down trim. If you have 1-2mm of up then you should be ok, Neutral is also OK, but you must NOT have any down trim in the elevator relative to the stabiliser or it will fly badly. If you do then change the stab angle and retrim You also need to check your cg. I fly at about 83mm, not at the 95 suggested by Paul in his video. I found you only need to change the incidence on the original radian, not the updated or night versions.

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