Did a few mods on my Dart XL and also followed the guidance on the Pawel Spychalski iNav fixed Wing Tuning Guide to see how it would fly.
Set gyro lpf to 20KHz, zero on all P vales with I gain on pitch at 10 and roll at 8.
You can see the whole video here: https://www.youtube.com/watch?v=A45vc4OihgY
This video shows an overview of my mods, Autolaunch with the iNav values above and a short flight to see how the dart XL handled.
I was quite pleased with the results.
My Spec
ZOHD Dart XL Extreme
Matek F405 Wing FC running iNav 2.1.0
HGLRC M8N Micro GPS
Tower Pro MG90D 9g Metal Gear Digital Servos
ZOHD Stock 30A ESC
ZOHD Stock 2216-1300KV Motor
APC 9x4.5 MR Prop
AKK FX2 Ultimate 1 watt VTX
Lumenier AXII Stubby 5.8GHz Antenna (RHCP) (SMA)
TBS Crossfire Micro RX
TBS Stock Crossfire TX Antenna
FR632 5.8GHz Groundstation with AXII Stubby & IBCrazy 5.8GHz 9.5dbic 5 Turn Helical Antenna
JHE42B 110DBI Finder Buzzer
Fatshark Dominator 3 FPV Goggles 16:9
Runcam Micro Eagle flight cam 16:9
GoPro Hero 6 HD Cam
Turnigy 3300mah 4S lipo
If you want to connect with other ZOHD enthusiaists then the ZOHD Dart, Dart XL, Nano Talon and Orbit Owners Facebook Group is a good place to start
https://www.facebook.com/groups/ZOHDOwners/
For help with iNav and all things fixed wing, there is a great bunch of guys on the iNav Fixed Wing FB Group
https://www.facebook.com/groups/INAVFixedWing/