We run a 2005 cavalier with the 2.2 on dirt and busted a hole in the transmission (5 speed). Local shop put in a new (to us) transmission. All seals on trans were changed. Changed rear main seal while trans was off. Car had a small oil leak dripping between the block and transmission before, now leaks much more. Besides damage to the new seal what else could be leaking in the same place? I believe they damaged the seal when installing trans.