You are welcome. There are many others here who would have posted helpful information. Keep asking.

No one has ever posted a meaningful/consistent explanation of those other numbers.

If you ever decide to get rid of that engine, it might be worth a little more than other worn-out 216/235 low-pressure engines. It has a one-year head (18 head-bolt and 2-bolt valve cover).

With a new/clean/rebuilt carburetor, you might be surprised how easily it will start-up.