I completely resurrected my crashed P3A. Had to solder the black box back on and solved the annoying data recorder error by changing the 4g micro sd in the black box to a 32g. That's all I had. Installed everything in new plastics, Re-calibrated everything and did a couple of test flights. Then had a look at my new MAXX panel only purchase. I have two remotes. One with DBS panel only and the other with FPVLR V2 with amps. I took the decision to take the FPVLR off the bracket, added two longer bolts on the back of the MAXX with plast-aid (amazing stuff) to align with the size and width of the FPVLR bracket holes, added a piece of polymer board to build it out to clear the power plug for the amp and voila. 23,000 feet to the battery limit without the slightest blip of interference on video or rc signal. It blew through everything that caused the others interference starting at 12,000. I did not try it without the amps but what I have assembled using existing configurations is simply amazing. Thought I would share this in case there is anyone else who has a FPVLR boosted system that would like to try the MAXX panel. Happy to share photos.
EDIT: Thank you Jake....totally happy!