2002 mazda 626 LX, 2.5L V6 (KL) I have a major oil leak that has saturated the most of the bottom of my engine compartment on the passenger side. The timing cover has come away from the engine in multiple places, including where the two pieces meet in the middle. I've already done some work in that area of the engine, including changing the alternator and replacing the crankshaft pulley and both belts. My questions: 1. What would cause the timing cover to not meet up with the block anymore? it's as if it is warped, there's large gaps on the top of both sides. 2. Is it difficult to change these pieces, relative to the other work i've done on this car? Do I have to remove the motor mount or any other components to gain access to the covers or bolts? 3. Apparently they don't make after-market timing covers. Is this because they don't require replacement very often? OEM parts are about $200. Any reason I shouldn't get a pair from a salvage yard? 4. Could a timing cover failure like this lead to such a big leak, or is it likely something else is leaking as well? 5. Whats the best way to clean all this up after I've fixed the problem? Thanks!