My home inspection of Speedmaster heads

The heads heated before guides installed? Heat expansion will make a guide loose enough to suck oil.
No idea, but I doubt it, this was a new bike I bought and had shipped to me across country. Had less then 10 miles on it, Came from the factory untouched to when I started break-in. I ended up degreasing the fissures, used vacuum and gravity to draw some Loctite retention of some sort, cured, then sealed the spring cups/guides/ head with gray rtv. Problem was solved