No point reinventing the wheel, print this and jam it into either end of the TPU mount provided with the kit. You'll be required to CAREFULLY remove the lower 15mm of plastic tubing from the antenna stalk.
Walksnail_1S_antenna_to_HGLRC_Wind_5_Lite_Antenna_base.stl | 587.4KB | |
Walksnail_1S_antenna_to_HGLRC_Wind_5_Lite_Antenna_cap.stl | 2.3MB |