Make sure you check the "ice cube tray" on top of the LIM and also check the plastic elbows.

I haven't pulled the plugs yet, but plan to in the near future.

The block is very clean, but I have now found a very, very small amount of coolant at the base of the supercharger/UI. I do not know if this is from when the dealer flushed the system or if it is new. The amount of coolant is probably less than an ounce.

I'd clean it up and run a little longer. See if you can get it to repeat.