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As an update, the tensioners were the problem. Hate to admit I did it, with my background I should have caught that.
I pulled the tensioners one at a time and pumped them up. Huge difference in the tension. Rotated the engine a number of times to be sure the full tension was on the chains, then set the timing.
Final specs on the deviation,
Bank1= 1.59
Bank2= 2.10
I'm Ok with that
@Philmou320 - You're correct in that they are 'suppressors' not 'depressors', much like a shock absorber or lifter. The fact that they are not in dampening mode lets the chain float enough that the timing is near impossible to get spot on.
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