I can't help you, but I will follow this. Sounds like you covered all the bases to avoid having to "code" any modules. THere is something that is getting overlooked. These things can be so temperamental. Over engineered.

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Dave S.
Northeast
2003 4.6is
2005 E53 4.4
2003 E39 Msport(a REAL ONE!)
1959 Fiat 600