I ended up having to get an autolite as that's was the only thing available and I wasn't wanting to waistband couple days for justca plug. The motor seems to be running better. On a side note O'Reillys gave me the wrong plug they said the BP6ES crossed to a B6HS, wrong, they both have different thread length and diameter. FAIL, I'm going to be a Napa guy from here on out!