I have APM 2.5 on my quad with v3.0.1, I have a FrSky D8R-XP Rx in CPPM mode and have the RSSI connected to AMP 2.5 (with an RC of 1K and 10uF). I get a reading but it's not full scale because D8R-XP only outputs 3.3 volts max and APM 2.5 analog input has a 5 volt range.

Some one mentioned changing code to correct for this. I am not a code guy, is there a way to adjust this in mission planner or how to go about changing this?  Could this get implemented in an upcoming revision of mission planner? TIA!