Picked this up the other night. Started looking at it yesterday, checks out straight as an arrow, flat to .002" but cylinders #1 and #4 have some casting flaws on the outer edges of the dome.
I assume the machine shop can smooth these out, but I figured I'd see what a few smart people on here would think before I am able to bring it in.
#4
#1
Here's showing 2 and 3 in the pic as a comparison.
Threaded Mode