Stroker engine "diesels" after I shut it down

I messed around with the engine last weekend as it was nice and I drove the rod around some. There is not a separete adjustment on the secondaries for the idle opening that I can tell. I backed the timing off a tad. The lighter weight (10W-30) oil really helps the cold natured starting for the first time of the day and the reduced timing also helped stop the diesling and the idle is now around 650-700 in neutral.

Man that car is a blast to drive, especially when manually shifting up and down! I had 8" long 3" dia cherrybombs added in front of the flowmaster 40s and the sound is a lot better. Guys at the local pool bar tell me it sounds like 4 bikes coming in as I downshirt 3-2 and then 2-1 pulling into the parking lot. I explain that at 416 CI it is about 4x the size and the 8 cylinders are 4x more so that sounds about right. The bikers don't like it cause (I think) it makes them think some bikers are pulkling in and they all get up to see who.

Anyways, happy as a clam now. Thanks for all the input FABO.