I don’t have any Radiolink hardware but some history as I understand it with Arducopter (I know you are using RadioLink specific firmware not official Arducopter). There is official Arducopter firmware for the origanal minipixes, then Radiolink at some point removed the Fram chip from the boards (cost cutting I suppose) which broke the AC firmware as it was configured. But if you follow this thread you will find version compiled by @vierfuffzig that will work with those boards.
So, why don’t you try it if Radiolink support is so poor that they can’t give you an answer? Assuming you have one of these newer boards that is.
Nice fishing Drones BTW!!