Good job. As soon as I saw that chamber shot, I knew it was an Easy Off job! Nothing else gets the crud out of the corners except a blind cleaner's ultrasonic and not many of us have access to one of those. Did you warm up the metal with a torch to drive out the moisture from the cracks and crevices and the pores of the steel before putting on the oil? I believe doing so greatly reduces the incidence of rust. Stock looks good too; clean but not too clean.