Well here is what Serpent said. Good customer service...
"This the first time we have heard of the new DSII crankshaft breaking.
We are fairly certain this is an isolated case. Please have your friend
send his complete engine with all broken parts and pieces to us. It will
be examined by our technicians to try and determine what caused this to
Send the engine to:
2834 NW 79 Avenue
Doral, FL 33122
RC's: MUGEN MBX5-T Prospec w/Ninja .28!
MUGEN MRX4X w/ Novarossi 321P Tuned
Trex 450 V2
Real Car: 2003 Corvette C5 Z06 Millenium yellow