I have recently bought a 1997 td42 GQ and the guy I bought it from said that he thought it had a twisted crank, he couldn't show me it running cause the battery's were dead because it had been sitting since he thought he twisted the crank, got it home and started charging the battery's decided to see if it would start today after it had been on charge all night and it fired right up, looked for any pulsation in the clutch, none checked the harmonic balancer for any float couldn't see any, is the any other telltale signs of a twisted crank to check before taking the engine out?