Bummer....these little guys fly so well too.
I had a the blue as well but finally retired it.... Ran a K&B 3.5 with tuned pipe....absolutely screamed.
Putting together the yellow now by having canniblized three seperate used models to make one......coming out pretty well. Putting an O.S. 32 in it as the rear exhaust of the 3.5 runs straight into the leading edge. As you know Im sure it will go out of sight with the .32
Almost put a new O.S. 30 four stroke in it.....

Paul