Sorry Gary about you and your Son's problems!!... But the tearing up of
planes is pretty much normal in this hobby... I know it does not feel good
But all we can hope for is, problems that's far and few!!!

Now that Prop biting thing:-(... First off really sorry about that!!, And Glad
it's as best as it can be!!.... But man get that cage/strapped hold down
build!!! And USE IT!!! Not most the time,, EVERYTIME!!! Props scare me
to no end!! Min. time in front... No time on the side.. Max time in back:-)
Alright I'm off of it..... Sorry... And I know you won't do that again!!!
Hope you and your Son have a Ball!!! Tell him we said Hi:-)