I opened my Cheerwing CW4 controller and spotted the 31mm 1/4 wave antenna. I modded it with speaker wire, twisting it to the original antenna, and cut the total length to 12.5cm. So it should be 1 wavelength now. I have a few questions from those before me who have modded 2.4GHZ antennae: (1) would modding to a 5/8 wave length work better? if so, I guess it would be 2.5X the 1/4 wave length, which is 2.5 X 31mm =~ 75mm - has anyone tried 75mm vs. 12.5cm? (2) I snaked the new antenna to the left along the inside of the controller in order to keep it roughly in the same parallel orientation as the original 31mm antenna - see the picture I made below, where the antenna is attached near the center of the controller - is this a good way to position the modded antenna? if not, what's a better way? the portion around the left index finger video trigger required a downward bend of my new antenna as well as the reroute (3) do I need to solder to make it work? or is twisting and electrical tape enough?