Hesitation when first putting foot on gas.

What are some things unique to this vehicle (if any) that would cause a hesitation when first applying the gas, while in gear. If I ease on it very gently, it could easily stall and has. If I hit it harder, it still hesitates very briefly but powers through it fine. I played with timing a bit, it's at 17 advance at idle now, was 22 advance at idle before. I know those are high relative to spec, but I didn't see any change when I dialed back to 17. It wasnt doing this a few months ago...

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Author: 74monacoHT