Engine locking up??
The obstruction occurs with numbers 5 and 8 up. Roll it the other way and same thing, numbers 5 and 8 up. Doesn't appear to be a stuck valve. I used two different magnets to go into those cylinders and didn't find or hear anything bouncing around.
More updates as I go!
Geez, sometimes you feel like you been shot at and missed, $hit at and hit!