HI all, I agree with David Searles and Birdseed2, on all accounts.
My experiance, concludes, the damage caused was from a Hot start, maybe straight propane, to cause that damage.
One hot start will useually destroy the Turbine pipe, be it FEJ's or a Tam's pipe.
Here is a pic of a Tam"s pipe after a hot start from a customer.
And here is another pipe from one hot start , which the propane and fuel lines where reversed.
Rcpete
PS, Tam's makes the best pipes