I responded to your pm. I didn't ask why it was being rebuilt, was it due to being sunk or run hot?
if it has slack it needs to be changed, no question about it. it will only cost your more in the long run the next time you have to tear it down for repairs. your taking a chance of damaging your motor
if it has slack it needs to be changed, no question about it. it will only cost your more in the long run the next time you have to tear it down for repairs. your taking a chance of damaging your motor