The bolt torque does not determine sealing capability on these pans and I don't think the order in which they are installed matters either. They are ingenious in that the bolt basically bottoms out in a metal clamp/spacer to apply clamping pressure to the edge of the pan but you really can't over or undertighten them if you are even close.

If the leak is from the gasket it was either defective or you had some crud under the clamping piece which the bolt goes through that acts as the spacer and clamps the pan in place. I can't swear by it but I thought there were more than 6 bolts...8 perhaps on the 722.6. Each one goes through a metal "clamp" that holds the pan. These pans are pretty beefy so I doubt it is the pan itself that has warped...I am guessing user error in the install...try again.

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Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz