Blink;
The Redstones don't get a "pass" The most critical people are those that own them and have done a tear down. Yes, we found sand in a few engines - but we also found excellent machining, fit and finish. Some work is required with these first engines to get them up to snuff, but that is why most have been sent to a few
'gearheads" who can tear down an engine and rebuild it without getting all knotted up.
Yes, we had one user run with 16 quarts in the sump, instead of 12. That caused the engine to carbon up a valve, but he did not even have to pull the head. He just tapped it, and it came out of it.
We have had several users fuss about excessive end play in the cam, but that is really easy to reduce using a flat washer.
On one engine, the owner reported one of the piston rings that was not spaced as evenly as he would have liked.
We have had one engine with a broken solenoid wire. It took twenty minutes to re-solder.
About one in three sold have varying amounts of grit/debris initially.
Most all run at 900 to 1300 RPM.
Sorry, it is not so exciting.
These are new engines to North America - so far so good, but there is ALWAYS room for improvement.