Thanks. Gonna bring it over to the machine shop tomorrow.
I gotta say it looks worse than reality in the images. Fingernail test proved alright for most cylinders. Got some more buildup at the ridge of cylinder #3 than the others but even so, while it does catch, it's relatively easy to scrape by...
How's about cleaning the innards of the cylinders themselves? Got a whole bunch of free floating carbon excess & coolant in there (that I'm hoping just spilled in while removing head)...
View attachment 1716294782
View attachment 1716294783