I would put in new bearings . The case will set you back a bit so whats another $20 . You could damage them getting them out and if you got the thing in bits you may as well do them at the same time . But thats just me .If you have to get a new piston and liner as well you may as well get a new engine . Have you got a price on the parts ? What caused the damage to the case ? Cheers the pope