Been flying my PV2 for about 6 months without any control problems. Zero crashes. Moding mostly for FPV and adding after market Tx antenna. This past week I've had 3 hard landings but only chip prop damage. Had to replace 3 props now. The loss control only happens during landing with around 30% battery remaining. Take off and flying out to around 3000ft is good no problems. Normally I hand catch my landings so it must be stable. Still have all my fingers. My 2.4ghz craft pinwheel antennas hang below landing gear. The Vision has one 5.8ghz pinwheel attached and the standard antenna. Controlling signal has never been a problem until this week. Now when craft gets within a 100ft away and maybe 20ft high I loose complete control. No screen messages but Vision is actual trying to land but is doing a very hard landing. I am able to turn motors off after crash. I've checked all antenna connections and took cover off transmitter to check antenna wire. No help though. Did the same thing on next flight. Change my Nexsus7 app from 1.38 to 1.40 with same result. Didn't expect changing app. would help but getting desperate. I do run with 3 sunhan amps. One 1 watt for 5.8ghz with 4.5 turn Helical antenna and Two 2 watt amps with 2 half dome helical antennas for 2.4ghz. This setup has served me well for around 100 flights. Something has changed with my equipment but just can't put my finger on it. Anyone have suggestions for problem solving this issue. Any help would be appreciated.