Technician a says that the connecting rods should be marked before disassembly. technician b says that pistons are cam ground so that when operating temperature is reached, the piston will have expanded enough across the piston pin area to become oval shaped. who is right? asked feb 8, 2017 in trades & technology by jordana) technician a only b) technician b onlyc) both technicians a and b d) neither technician a nor b