A question about intakes

from what I'm told it was turned over by hand every year or so while it sat until the last couple. I plan to pull the timing cover and remove the timing chain to see if its the rings or cam that are stuck. It may still get fully pulled apart yet but I want to find root cause first.

As to the ridge. I can only see it faintly, can't get a finger nail on it. More concerned right now with getting it turning again to see what is next.

I have never seen assembly lube turn to glue either. I have had motors that were sitting for years and tore them apart and it was still like new.