Hey guys, I usually don't ask for help with things because I'm generally not bad at researching and figuring things out on my own but I'm really stumped here.I have a pixhawk that I originally used in a techpod and after about a week of tinkering, I got that working fine. Good coms from ground station, accelerometer working, gps and compass working, all modes working relatively well.I've since tried to transition everything to a quadcopter and have had issue after issue after issue. I can't seem to find a solution to my several problems...1. I'm using a qbrain 4x25a ESC and can get that calibrated fine with my RC Controller but when hooked to the pixhawk I get no response. It just keeps beeping like it's not receiving a signal, even when armed. Everything else appeared to be working as usual. All sensors and RC control although I had to recalibrate the rc connection multiple times. No idea why.I felt like I might have worked through the ESC issue this morning but now I can't even get the pixhawk to start properly. I power it on and all the LEDs at the top light but the big one just blinks yellow a few times then goes blank. I can't connect with USB or radio link(sometimes the USB connection works). I'm really confused because all I did was recalibrate the escs with the spektrum reciever. I feel like everytime I fix a problem a new one springs up.Setup is as follows:-4s zippy compact 4000mah 25c-pixhawk running mission planner and latest quad firmware-qbrain 4x25a ESC-3drobotics mag/gps-spektrum dx7s controllerMy questions are:1: please help?!2. Does transitioning from fixed wing to quad require any special steps? Wiping mem card etc?3. My power module was modified to work with a 6S battery and was verified working but now with 4S is there a problem with if?4. I can't remote arm not sure why...but I can with the button and the laptop.Any help would be incredibly appreciated, I'm stumped.ErikPS. If anyone wants to trade a dji naza with gps I'd be willing to do that at this point.