If you will take a 1/16th drill bit and drill hole where crack stops, It will do just that,stop the crack!! Then paint the crack with the glue shown below,e-bay good to find glue!!!
Did anyone,who joined the FAA crap to fly a plastic drone,why not just finish what you have started and get the real license and drop the toys for the big boys full size !
I would be interested in the Drone but I live in the USAwould you have a problem with that? I also have an outdated P3S,could use that for extra parts or what ever!