Ok I think I've got it. So, you really can't change from piezo to hh mode when using channel 5 unless you go in and go to that percentage area you were talking about in the Gyro % ?

One more quick question if you don't mind? You say to put it at 15% which is equivalent to 75% HH. But, if you are going from the 0 to 50 area and treating that like 0 to 100 and you wanted 75% gain in HH wouldn't you just take 75% of 50 and set the HH at that? I don't quite understand the 15% is 75% thing.

I did figure out why the tail is slightly changing when I go to the different flight modes. It is because I adjusted the tail trim manually in Normal mode and when I switch modes the trim doesn't transfer and it goes back to having zero trim. I'll have to make sure and zero the servo with the linkage to avoid that.

Thanks for all of your help!